Tools/Maintenance

- Spider removal tool is compatible with all e*thirteen cranks that have a removable spider, and can also be used as an installation/removal tool for e*thirteen bottom brackets

World's first pliable hot melt chain wax formula with Graphene for use in crockpots is here. GRAPHENwax—Super pliable, non-crumble, quiet, clean and extremely easy to break-in formula. It exhibits excellent dirt protecting capabilities and durability while maintaining impressively low friction for a prolonged period of time in dry and mixed conditions. It's the easiest wax to break-in after chain cools down—simply hold your chain in one hand and run it between two fingers of your free hand (as per our video) and job done—no more solid sticks or backpedaling issues. Our wax doesn't crumble, chip or leave any marks thanks to our proprietary formula. It's everything you wished for in a hot melt wax. Perfect for Road, Triathlon, Gravel, Mtb and E-bike. Keeps your drivetrain spotless clean. Can be used along with GRAPHENlube. It's the most quiet hot melt wax you will ever use. Unlike other Hot Melt waxes, GRAPHENwax not only exhibits lowest friction, but also lasts longer and is much easier to use. Usually after dipping the chain in melted wax you need to wait until chain cools down and then painstakingly break every chain link so the chain can be flexible again, leaving crumbled mess behind and particles on the frame and crank. With GRAPHENwax, we have reinvented this process. After the chain cools down, you only need to run it between your fingers along its entire length, and the chain is broken-in leaving no pieces of wax behind. Our wax simply doesn't crumble during the chain movement, meaning you have more wax that protects the drivetrain for longer. It can also withstand those hot days where other wax lubricants simply melt off your chain. GRAPHENwax will not stain your fingers when handling the chain and it's the quietest wax coating you will use. It's your "dream come true" wax lubricant. GRAPHENwax and our World Tour winning GRAPHENlube go very well together. If you plan longer rides you can "top it up" with GRAPHENlube. Chain will not require re-cleaning. Why we don't use Tungsten Disulfide (WS2) nor Molybdenum Disulfide (MoS2) additives. While these substances can exhibit super-low friction, they do it only in vacuum or inert gas. In normal humid air they not only have high friction but also very short life because of the rapid oxidation process. Using these additives in chain lubricant, where water is often present, is simply pointless. We also don't use any oils or paraffin oils in the mixture because it adversely impacts the friction. - 340g / 12 oz . +/- 4%. Each box contains 4 "squares" - Wax is black, but on the chain looks transparent. Doesn't leave marks. - Hydrocarbon waxes containing special mix of high-purity graphene. It does not contain any harmful solvents.

- Evaporates fast and leaves no residue - A "no-scrub" cleaner that cleans to the base and prepares surfaces for application of high-performance lubricants - No water rinsing is required - Clean Streak's No-Rinse, No-Residue formula is perfect for use on disc brake rotors

Tri-Flow Superior Lubricant is a light viscosity lube that allows for deep penetration into hard to reach moving parts. - Ideal for all conditions - wet, dry, road and trail - High grade petroleum oils provide optimum lubrication under extreme temperatures (-60 to 475F) and humidity

Tri-Flow Superior Dry Lubricant was specifically designed to lubricate like an oil and stay clean like a wax. Its exclusive formula includes paraffin wax and high grade petroleum oil which penetrates as it quickly sets up and dries, leaving a thin, visible, coating that repels water as it lubricates. - Specifically designed for lubricating chains - Applicator is not included or needed because of the product's consistency

Designed for bikes with hollow spindle cranksets. Lift the rear wheel to mount bike on the tune-up stand in seconds for washing, display, storage and maintenance. - CLAMP HEAD: hollow spindle drive side crank - ADD FEATURE: Quick tool-free assembly - MATERIAL: Aluminum / Engineering grade polymer / Steel - MAX WEIGHT CAPACITY: 18 kg / 39.7 lb - COMPATIBILITY: Bike with hollow spindle cranksets (more than 20 mm) - SIZE (folded): 40 x 40 x 8 cm / 15.7” x 15.7” x 3.1” - SIZE (open): 40.5 x 39.5 x 38 cm / 15.9” x 15.6” x 15” - 1.8 kg / 3.97 lb

• Threader • Remover • Reamer

• Penetrating all purpose lubricant with PTFE • Repels moisture and prevents rust and corrosion • Use on chains, cables and pivot points • Loosens rusted and corroded nuts and bolts • Ideal for all conditions wet, dry, road and trail • 12 ounces

• Precision-sized, hardened-steel, chrome-plated spoke wrench • Deep U-channels for a great grip • 8-groove design fits 9/10/11/12/13/14/15 gauge spokes/nipples • Made in Taiwan

Stan's 2oz Tire Sealant Injector measures the desired amount of sealant then attaches to your valve stem for easy, no-mess application. And, it works on Presta and Schrader valves!

Removes Presta and Schrader valve cores. CNC machined, anodized finish with laser-etched logo. Fits between spokes for quick and easy core removal. Features knurled end for a no-slip grip.

Stan's Dual Action Repair for Tubeless (DART) fixes damaged tires faster, easier, and better than existing plug tools. While traditional tire plugs try to wedge rubber strips into a puncture, the DART creates a chemical reaction with your Stan's sealant to quickly form a permanent airtight bond. The DART's plastic tip is barbed to anchor firmly in place and stay put during even the most aggressive riding while being safer for rims, rim tape, and your hands. The material of the DART is also more flexible, and its laser-cut shape is optimized to contour to the shape of different punctures, maximizing surface area to increase the sealing reaction. Because the DART anchors to your tire and creates an instant bond with your sealant, it also won't pull out while riding the way a conventional plug can. One of the best features of the DART's design is that it doesn't require trimming once inserted, and excess material won't get in the way of your ride. DARTs can't be felt while riding, even on road tires, and they wear smooth naturally. - Repairs large punctures and slices - Reacts with Stan's sealant to form an instant, airtight seal - Barbed plastic tip anchors into tire and will not pull out when riding - Flexible material and laser-cut shape conforms to puncture and bonds with sealant - Wears off clean, no trimming needed, and can not be felt while riding, even on road tires - Lightweight, compact tool fits the shape of your hand for more precise use and includes built-in valve core remover - Includes two pre-loaded DARTs for sealing multiple and larger punctures - Clear caps keep DARTs clean and unthread quickly for fast deployment - Simple and easy to refill

Shimano Hydraulic Disc Brake Fluid - Non-corrosive mineral oil that offers excellent heat expansion properties - Mineral oil will not absorb water from the air - Not caustic and is non-toxic

Service kits include dust seals, foam rings, oil seals, air and damper o-rings needed for basic service.

Factory service kits for Reba A7 forks

Rear Shock Air Valve Adapter (for charging IFP) - SIDLuxe A1+ (2020+)

RockShox's Suspension Oil comes in different weights to match the most popular suspension fork and shock setups.

- Essential mechanic tools to properly service and maintain all RockShox products - Clamps the shock body for easy maintenance

Vivid/Vivid Air internal floating piston spring compressor

ProGold ProLink is designed to shed dirt, mud, and abrasives, and reduce tacky build-up in all climates. - Smoother shifting, quieter drive train - Repels moisture and reduces oxidation and corrosion - Disperses water and resists wash-off - Will not build up or get tacky - Works well in all climates - Longer chain and sprocket life - Long-lasting - Can be used as a dry lubricant - Environmentally friendly - Available in: 4 fluid-ounce drip, 8 fluid-ounce aerosol, 16 fluid-ounce pump, and 32 fluid-ounce.

The Cassette Lockring Socket w/ Pin is designed to work seamlessly with Pedro's snap-channel Pro Socket handle, any 24mm socket/wrench, or in a bench vise. - Fits all Shimano, SRAM, SunRace, SunTour, Chris King, and other HG standard cassette lockrings and Shimano disc brake lockrings - Designed to work with Pedro's snap-channel Pro Socket Handle, a 24mm socket or wrench, or in a bench vise

- Unique citrus-based solvent/surfactant blend quickly dissolves away grease and grime. - Low surface tension allows superior penetration for complete degreasing. - Biodegradable, water-soluble formula easily rinses away. Oranj Peelz has quickly and effectively degreased drivetrains for more than twenty years using a unique citrus-based solvent/surfactant blend. Designed specifically for bicycle drivetrain degreasing, the powerful, biodegradable formula penetrates into every surface and quickly loosens and dissolves even the toughest drivetrain grime. The water soluble formula rinses easily leaving surfaces residue-free.

- The original synthetic chain lube formulated specifically for mountain bikes. - New formula lasts even longer and is dye-free. - Superior wear protection, efficiency and durability for extreme conditions/mileage. - Unique detergents break down and isolate dirt protecting the surfaces of your chain. This is the product that started it all back in 1989. This breakthrough lubricant revolutionized the entire chain lube market. This full synthetic lubricant is designed to handle the harshest conditions and outlast other lubes in all conditions. Syn Lube is formulated with extreme pressure additives, corrosion inhibitors, and tackifiers to provide incredible wear protection, lubrication, and staying power in extreme wet and muddy conditions. Unique polymer detergents also work to break down dirt protecting the surfaces of your chain. Go ahead, play in the mud.

The tire lever, though seemingly one of the simplest and most basic of cycling tools, is one commonly used by almost every cyclist, and unfortunately, one often responsible for unnecessary frustration. Really, what is more fun than flatting far away from home, being thrilled you lugged that spare tube and pump, and then having your tire levers snap in two? Pedro's award-winning, universally loved tire levers feature molded box construction and a proprietary plastic composite blend that makes them the strongest levers available. The unique chisel tip shape easily inserts beneath the tire bead and the slightly thicker shape keeps the lever securely in place. Additionally, the bold shape of the lever and helpful dual spoke hooks makes removal of even the tightest tires a simple task. - Award-winning and universally loved - Molded box construction and proprietary plastic blend makes these the strongest levers available - Chisel tip shape is easy to insert beneath the bead and the slightly thicker shape keeps the tire lever from slipping - Bold shape makes it easy to remove the tightest of tires without bending or breaking

- Durable double-ended brush - Ideal for chains, cogs, derailleurs, and chainrings. - Recommended for use with Pedro's cleaner and degreaser products. - Solvent resistant synthetic handle and bristles. - Not recommended for oral use. Pedro's Toothbrush is designed to tackle the drivetrain and is ideal for cleaning chains, cogs, derailleurs, and chainrings. The ergonomic handle is paired with two purpose built brush features. The tapering length bristles up front are designed to scrub the intricate surfaces of chains, chainrings and cassettes while at the opposite end, longer, stiffer, larger-diameter bristles reach deep between the cassette cogs removing even the deepest dirt and grime. The Pedro's Toothbrush can also be a great tool for applying degreaser to drivetrain parts. While holding the Toothbrush flat with the bristles out to the side, pour degreaser to the bristles. Then quickly move the toothbrush to the drivetrain and apply the degreaser using a light scrubbing motion. This technique works especially well with Pedro's Degreaser 13.

Having trouble getting at internal nipples? Park's 3-Way Internal Nipple Wrench comes to your rescue. It features a 3.2mm square drive, as well as 5 and 5.5mm hex sockets that slip perfectly into the tight surroundings of most rims. It also utilizes Park's innovative Y-shape design that provides heaps of leverage and comfort.

Park Tool introduced the bicycle world to the 3-way hex wrench set over 30 years ago. Our 3-way wrenches fit perfectly in the palm of the hand and provide excellent leverage, making them a favorite of countless shop mechanics worldwide. AWS-1 FEATURES - 4mm, 5mm, and 6mm hex set - Wrenches made from industrial tool steel, through hardened and tempered for long life - Chamfered tips for a perfect fit

Shop-quality, adjustable torque driver that limits torque applied to fasteners, preventing over-tightening and damage to lightweight components. The ATD-1.2 features all-metal internal construction with a comfortable, ergonomic composite molded grip. Each tool is assembled and calibrated at Park Tool's factory in Minnesota.

The BBT-22 is a shop-quality tool for installing and removing Shimano and ISIS Drive splined 20-tooth bottom bracket cups. Made from investment-cast steel, the BBT-22 ensures maximum engagement with the bottom bracket cup. It can be used with a 3/8-inch drive torque wrench, a 3/8-inch ratchet driver, a 32mm wrench, the Park FRW-1 Freewheel Remover Wrench (sold separately), or a 1-inch wrench.

A precision CNC-machined aluminum tool for the installation and removal of select threaded bottom brackets with 16-notch tool fittings, including Enduro T47 & PF30 bottom brackets. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8" drive. Fits 16-notch bottom bracket tool fittings with a major diameter of 52-54 mm and a minor diameter of 48.8 mm, including: - CeramicSpeed T47/86 - Enduro T47 (30mm and DUB spindles) - Enduro BB30/30a TorqTite (30mm and DUB spindles) - Kogel T47 - SRAM T47 DUB - White Industries T47 - White Industries PF30 Thread-Together

A precision CNC-machined aluminum tool for the installation and removal of select components with 16-notch tool fittings, including bottom brackets, center lock disc brakes, and e-bike motor lockrings. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8" drive. The BBT-69.4 features integrated threads for full compatibility with the Park Tool BBT-RS Bottom Bracket Tool Retaining System (sold separately). The BBT-RS uses an adjustable spring-based tension system to apply consistent, adjustable pressure to the tool, ensuring full engagement with the tool fitting and preventing slippage. Fits 16-notch tool fittings with a major diameter (outside of notches) of 44–45 mm and a minor diameter (inside of notches) of 42.7 mm, including: - Shimano BB80, BB5700, XT BB70, BB51, and previous external bearing threaded bottom bracket cups - Threaded bottom bracket cups from Campagnolo, Chris King, FSA MegaExo, Hope, SRAM/Truvativ GXP, Race Face X-type, Surly, Wheels, Fulcrum, and others - Center lock disc brake rotor lockrings - Bafang BBSH, BBS02 mid-drive motor lockrings - 3/8" drive fitting

Precision CNC machined aluminum tool for the installation and removal of 12-notch external bearing bottom brackets. Anodized for easy identification and featuring a ratchet/torque wrench compatible 3/8" drive. - 46mm 12-notch OD cup - Race Face® Cinch™, Rotor® BSA30, Zipp® Vuma™, Hawk Racing™ BB3086™, and more

Park's Bottom Bracket/Cassette Tool for Campagnolo is an indispensable tool for your Campagnolo drivetrain. It's for installing and removing all Record, Chorus, Centaur and Athena bottom brackets, and all Campagnolo cassette lockrings.

The Park Tool FR-5.2GT is designed specifically for use when removing and installing cassette lockrings from thru axle hubs. -Utilizes a 12mm guide pin to stabilize the tool during use - Fits 12-spline cassette lockrings from Shimano, SRAM (including 1x), SunRace, SunTour, Chris King and others (23.5mm diameter) - Fits some Shimano and similar disc brake rotor lockrings

Park's FR-5G Cassette Lockring Tool fits most cassette lockrings from Shimano, SRAM, SunTour and SunRace. Made from heat-treated tool steel, the FR-5G features an extra-long splined body to prevent slippage and a guide pin to ensure the tool is in straight, preventing stripped lockrings. And, it can also be used to remove and install Shimano disc brake rotors. The FR-5G requires the use a chainwhip tool to prevent the cassette from turning during lockring removal.

Park's Compact Crank Puller is used to remove Shimano Octalink, ISIS Drive and square-taper cranksets. It includes 2 rotating tips (16.3 and 11.3mm) to make the job easy. This is a great tool for your travel and home tool kit.

The Park FR-2 Freewheel Remover fits SunTour two-notch freewheels. It's built thin so that removing axle parts is unnecessary. And, it's constructed of durable heat-treated steel. (Not recommended for use with SunTour 4- and 6-notch freewheels.)

The Park FR-3 Freewheel Remover fits SunTour four-notch freewheels. It's built thin so that removing axle parts is unnecessary. And, it's constructed of durable heat-treated steel.

The Park FR-6 Freewheel Remover fits most 4-notch BMX and singlespeed freewheels. It can be held with a wrench or vise and its narrow profile allows use without removal of cones and locknuts.

12 splines, 22.6mm diameter fits Shimano, Sachs Aris, Sun Race, DNP Epoch, and other 5–10 speed freewheels. The FR-1.3 includes an enlarged thru-hole to accommodate 14mm axles.

Park's Hex Wrenches are every mechanic's best friend. They are constructed from industrial quality steel for durability and feature chamfered tips for a precision fit. And, their convenient L shape is perfect for jobs that require lots of leverage or for getting to hard-to-reach bolts.

Park's Home Mechanic Pedal Wrench is great for your home workshop and event tool box. This top-quality 15mm pedal wrench provides the leverage you need to remove stubborn pedals. It's made to last from heat-treated steel, and the handle has a vinyl grip for comfort.

Park's Mini Chain Brute Chain Tool goes anywhere and features a V-shaped handle, a super-strong replaceable pin, and fine threads to make chain removal and installation a breeze. The CT-5 works on any derailleur chain, including Shimano Hyperglide and 9-, 10-, and 11-speed. It works for loosening tight links, too.

Park's Open Ended Metric Wrench is a special thin wrench with 8 and 10mm openings perfect for adjusting the thin pivot-bolt nuts on sidepull brakes (and other hex nuts on your bicycle). This handy brake tool is made of durable tool steel that's nickel plated for corrosion resistance.

The PK-5 includes over 90 of our best shop tools selected with versatility in mind. A great way to outfit a pro bench or to set up a dream home workshop. The PK-5 is an impressive, professional set of specialty tools that can help you perform hundreds of bicycle repair and maintenance procedures. An investment you'll use and appreciate for decades. Kit Includes: - ATD-1.2 Adjustable Torque Driver - AWS-1 Three-Way Hex Wrench Set: 4, 5, 6mm - AWS-3 Three-Way Hex Wrench Set: 2, 2.5, 3mm - BBT-10.2 Adjusting Cap Tool: For 8-Spline Hollowtech II - BBT-22 Bottom Bracket Tool - BBT-69.2 Bottom Bracket Tool - BO-2 Bottle Opener - CBW-1 Open End Wrench: 8/10mm - CBW-4 Open End Wrench: 9/11mm - CC-4 Chain Checker - CN-10 Professional Cable and Housing Cutter - CNW-2 Chainring Nut Wrench - CP-1.2 Cassette Pliers - CT-3.3 Chain Tool - CWP-7 Compact Universal Crank Puller - DAG-2.2 Derailleur Hanger Alignment Gauge - DH-1 Dummy Hub - DP-2 Threaded Dummy Pedal - DSD-2 Derailleur Screwdriver: Cross Tip - DSD-4 Derailleur Screwdriver: Flat Blade - DT-2 Rotor Truing Fork - FR-5.2H Cassette Lockring Tool with Handle - GSC-1 GearClean Brush - HMR-8 8 oz. Shop Hammer - HXS-1.2 Hex Wrench Set - MLP-1.2 Master Link Pliers - NP-6 Needle Nose Pliers - PAW-6 6" Adjustable Wrench - PH-1.2 P-Handle Hex Wrench Set - PW-4 Professional Pedal Wrench - RR-12 Tape Measure - SBC-1 Spoke, Bearing and Cotter Gauge - SBS-1.2 Socket and Bit Set - SCW-13 13mm Shop Cone Wrench - SCW-14 14mm Shop Cone Wrench - SCW-15 15mm Shop Cone Wrench - SCW-16 16mm Shop Cone Wrench - SCW-17 17mm Shop Cone Wrench - SCW-18 18mm Shop Cone Wrench - SCW-19 19mm Shop Cone Wrench - SP-7 Side Cutter Pliers - SW-0 Precision Spoke Wrench: .127" - SW-2 Precision Spoke Wrench: .136" - SWR-8 3/8" Drive Ratchet Handle - SZR-1 Shop Scissors - TL-1.2 Tire Lever Set - TL-4.2 Tire Lever Set - TL-6.2 Steel Core Tire Levers - TWS-1 Torx Compatible Wrench Set - UP-SET Utility Pick Set - VC-1 Valve Core Tool - ZP-5 5" Flush Cut Pliers

Park's PolyLube is specifically formulated to protect bearing components. Its Polyurea grease has extremely high shear strength to protect bottom brackets, headsets, pedals and hubs. Use it on threads, seatposts, stems and cables, too. It's also safe for fork seals, and repels water.

This combination chain whip and freewheel / lockring remover wrench is heat treated to prevent bending and flexing, with a molded handle for comfort. - 1/8-inch model works on 1/8-inch chains and sprockets - 1-inch (25.4mm) box-end wrench fits Park Tool Freewheel/Cassette Lockring Tools - Features hardened pins to keep the chain in place

Park's Cone Wrenches are made of durable tool steel and are nice and thin to fit on the small-clearance cones found on hubs and other bearing assemblies. Plus, they work as regular wrenches, too. They feature Park's special Y heads that put more material where it's needed for excellent durability and strength. Most applications require at least 2 cone wrenches. If you have questions please contact us and we can recommend the correct sizes for your needs.

Park Tool's Shop Scissors are shop quality with sturdy, stainless steel blades and a dual-density grip. They're perfect for a wide range of mechanic's duties including cutting zip-ties, boxes, bar tape, and handle grips.

Park's professional-quality, precision-sized spoke wrenches are hardened and chrome plated for long service. Wrenches are vinyl coated in one of four colors indicating the size at a glance. You will find these wrenches in virtually every professional bike shop and every shop mechanic's personal tool stash. Make sure you have the sizes you need in your home toolbox and bike bag.

Because even your super-fast Mavic wheels will eventually need truing, Park designed the Spoke Wrench For Mavic Wheel Systems. This comfortable, vinyl dipped, two-sided spoke wrench is designed to easily access Mavic fittings. Plus, it fits both Mavic 9mm threaded eyelets and 5.65mm integrated nipples.

• Updated to fit better in the hand with a more rounded, smoother shape • The precision sized SW-7.2 fits the three most popular spoke nipple sizes on the market • Nickel plated for years of service • Designed for the home mechanic. FIts the following size spoke nipples: • .127" (3.23mm) • .130" (3.30mm) • .136" (3.45mm)

The Triple Spoke Wrench is super-convenient because it fits the 3 most popular spoke-nipple sizes. Use it to keep all your bikes' wheels true, round and tight so you can keep riding strong.

Park's Valve Core Tool is great for tightening, removing and installing Schrader and Presta valve cores (the cores are inside the valve), and also Presta valve extenders that have 5mm wrench flats. It's a handy tool to save a tube when all that's wrong is a broken valve, and it also lets you remove valves to easily insert sealant.

- Dark nickel plated finish - CNC machined arms - Hex keys: 2/3/4/5/6mm - Flathead and Phillips screwdrivers - T25 Torx

- Highly versatile dry weather chain lubricant - Deep penetrating, durable P.T.F.E. chain lubricant - Hold up to extreme conditions which can destroy ordinary lubes - Comfort bottle with pipette system for ease of use and application

Muc-Off Waterless Wash is a highly advanced, easy to use spray which cleans and polishes in seconds without the need for water. It details your whole bike, motorcycle or car in seconds leaving behind a streak free shine. Its innovative formula is designed to encapsulate any surface dirt to prevent scratching. Use it to remove light contaminants in between major washes. - Cleans and polishes in one application - No need for water - No residual dust or streaks - Powder-free - Great for eBikes - no danger of getting electrical contacts wet

A proprietary ceramic formulation containing integral Boron Nitride compounds for low friction in wet and harsh conditions. Formulated with unique eBike specific lubricity pack to handle the higher-torque loads of an eBike drivetrain. Ideal for: Chains, cables, shifters, derailleurs & pedals. - Specifically designed for the hi-torque loads applied to an eBike chain - Creates a ceramic coating for incredible durability and long-distance performance - Contains Boron Nitride compounds - Ceramic compounds provide ultra-low friction for excellent efficiency - Waterproof - excels in wet conditions - Readily biodegradable - Ideal for road and off-road - Integral UV tracer dye - aids a

Developed in collaboration with a premium OEM component manufacturer. Maxima Mineral Brake Oil is designed to ensure fast and safe brake response at the most critical moments. A mineral-based formula does not damage painted surfaces or carbon fiber. Low maintenance formula does not absorb moisture like DOT fluids, delivering a high boil point and minimizing the frequency of system bleeds. Zero-fade performance provides the ultimate braking control under power. For use in mineral-based brake and hydraulic systems specifying mineral oils. Features: - Consistent lever feel. - Low maintenance. - Lubricates and conditions seals. - Minimizes system bleeding. - OEM green coloring. - Maintains High boiling point.

- PLUSH Suspension Oil - Formulated specifically for mountain bike suspensions - Designed for use in both forks and shocks - Reduces stiction and running friction - Consistent damping performance at any temperature - Proprietary additive system minimizes oxidation, corrosion and wear - Designed to protect seals and extend time between rebuilds