KTM 300 EXC Transmission & Drivetrain

Renthal Grooved Front Sprockets

Renthal grooved front sprockets are simply the finest front chainwheels on the market today. They are designed to offer excellent durability with a lightweight design which delivers maximum power transfer. Each sprocket is CNC-machined from cased hardened and core refined 655M13 nickel chromium steel. Mud grooves are then CNC-machined into each tooth on both sides of these components to allow mud to flow away from the key contact points between the chain and the sprocket. This unique design helps reduce wear and can dramatically increase the lifespan of your drivetrain. Maximize your performance with the ultimate front sprockets from Renthal.

Not Yet Reviewed

$34.16

Renthal Twinring Sprockets

Renthal Twinring sprockets are truly unique hybrid sprockets that will keep you spinning around the track. Twinring off-road sprockets are made of long-lasting and durable material--a high-strength, ultra-light 7075 T-6 aluminum inner core and an electroless nickel coated steel outer ring are permanently bonded together. They are precision CNC-machined to tight tolerances and feature a flat face design that keeps weight to a minimum and makes them as narrow as regular sprockets! Self-cleaning mud grooves are added between every tooth on both sides to prevent dirt buildup, plus flat socket head screws add additional strength to the sprockets during side impacts. Try double durability with less weight on your dirt bike with the addition of Twinring sprockets from Renthal.

Not Yet Reviewed

$128.26

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$134.99

Renthal Ultralight Rear Sprockets

Renthal Ultralight rear sprockets will withstand the rigors of supercross, motocross, and enduro racing. Manufactured to extremely tight tolerances, they are 66 percent lighter than steel, and yet incredibly durable. Renthal uses computer-aided design, high-strength specially enhanced 7075 T-6 aluminum alloy, and CNC-machining to produce sprockets that are high-strength, hard-wearing, and offer the maximum reduction of unsprung weight at the rear wheel for maximum power transfer. They've also added self-cleaning mud grooves between every tooth on both sides to prevent dirt buildup. Shouldn't you choose the sprockets chosen by more factory race teams? Join a winning team and install Renthal Ultralight rear sprockets.

5.0 out of 5 stars ( 2 )

$43.16

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$94.15

All Balls Racing Master Cylinder Rebuild Kits

All Balls Racing master cylinder rebuild kits stops the leaks. They contain all you need for the rebuild--copper washers, replacement screws, and where applicable, cup seals and O-rings. Service your master cylinder to maintain like-new performance with rebuild kits from All Balls Racing.

4.0 out of 5 stars ( 2 )

$39.82

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$46.81

Pivot Works Wheel Bearing Kits

Restore control of your ATV, bike, or utility vehicle by changing that rusted or loose wheel bearing with Pivot Works wheel bearing kits. These kits have the versatility to fix the problem, regardless of where it lies. Made from OEM-grade materials for an exact fit and reliability, the Pivot Works wheel bearing kits are engineered to save you time and effort. The kits include all of the bearings that you need to repair one wheel. Some kits may include seals. Ride safer and improve your steering and braking with Pivot Works wheel bearing kits.

Not Yet Reviewed

$9.50

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$41.99

Wiseco Clutch Spring Kits

Wiseco clutch spring kits are manufactured from premium steel and then shot-peened and heat-treated. These replacement springs are stiffer to ensure a positive clutch lockup every time. Keep your clutch from slipping with Wiseco clutch spring kits.

Not Yet Reviewed

$39.99

Rekluse Clutch Radius X 4.0 Clutch Kits

A high-performance, stall-preventing auto clutch is just a clutch pack swap away. Rekluse Clutch Radius X 4.0 clutch kits combine TorqDrive friction disk technology with next-generation EXP 4.0 auto clutch disk functionality to provide stronger power delivery, improved clutch durability, and rider-focused, auto clutch functionality. Packaged in the framework of a drop-in clutch pack, EXP 4.0 prevents engine stalling so riders can focus on their line and let the clutch do the rest, while TorqDrive provides increased power transfer and durability over OEM. Rekluse Radius X 4.0 clutch kits are the perfect choice for riders looking for unmatched clutch functionality within the convenience of a clutch pack. Choose the kit designed for your bike. Features: * On-the-fly external adjustment * Allows riders to run a gear taller, letting the suspension work better and saving energy * TorqDrive clutch pack provides longer clutch life with less adjustment over time * Retains full, normal use of the clutch lever to fully override the auto functionality at any time * Improves rider control, and maximizes traction and confidence to navigate challenging terrain * Basket sleeves protect OEM baskets from notching

5.0 out of 5 stars ( 1 )

$999.00

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$1,039.00

All Balls Racing Wheel and Carrier Bearing Seal Kits

All Balls Racing wheel and carrier bearing seal kits are hands-down the most complete line of bearing seal kits on the market! They are available in a wide variety of powersports applications, from ATV and off-road to street bikes. These All Balls Racing wheel and carrier bearing seal kits have premium high-speed bearings that feature low-drag, double-lip seals on both sides to provide superior exclusion of water and dirt and improved grease retention. High performance Chevron SRI-II grease features special rust inhibitors for the most demanding applications. Type TC nitrile elastomer wheel seals are specifically designed to keep out water and dirt. Their rubber coated outside diameter helps to create an optimum seal at the hub.

4.45 out of 5 stars ( 20 )

$22.59

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$36.41

EBC Standard CK Series Clutch Friction Discs

EBC standard CK series clutch friction discs are almost identical to original equipment clutch plates. These discs are cork-based products impregnated with aluminum particles to increase wear life and heat resistance. These clutch plates are compressed to avoid swell and clutch drag and feature an ideal general-purpose replacement material for all grades and sizes of motorcycles. Springs and clutch plates are sold separately.

5.0 out of 5 stars ( 5 )

$111.07

Clearance

Pivot Works Watertight Wheel Collar and Bearing Kits

Service the drivetrain on your off-road bike with a Pivot Works watertight wheel collar and bearing kit. These packages include an upgrade over factory wheel collars, with components military-spec hard anodized to resist rust and corrosion. The O-ring prevents rain, snow, and dirt from entering the hub between the axle and collar. Pivot Works kits are tailored for fitment on specific makes and models—and come complete with bearings, seals, collars, and an extra set of O-rings.

Not Yet Reviewed

$65.64

$29.50

Clearance

Sunstar Works Triplestar Aluminum Sprockets

Available for all racing applications, Sunstar Works Triplestar aluminum rear sprockets are the longest lasting aluminum rear sprockets available. They are manufactured from aerospace-grade 7075-T6 aluminum and are computer-designed with weight reduction holes for lightness and stability. Their exclusive tooth-valley design provides up to 50 percent more chain contact area than other aluminum sprocket brands and their hard anodized coating provides added durability and an eye-catching finish. Mark your calendar--the racing aftermarket segment has been changed forever, thanks to Sunstar Works Triplestar aluminum rear sprockets.

Not Yet Reviewed

$89.99

$37.50

Rekluse Clutch Friction Disc Kits

Rekluse Clutch friction disc kits are available in several sizes to service numerous dirt bike models. These sets will replace worn friction discs to ensure proper clutch engagement and the efficient transfer of power from the engine to the wheels. Select the Rekluse friction disc kit designed for your bike.

Not Yet Reviewed

$159.00

Acerbis Chain Sliders

Acerbis chain sliders fit like OEM, but last longer and look better! They're made of ultra-durable polyurethane and they preserve your chain and swingarm with their smooth-as-butter surface, practically eliminating unwanted friction. These flexible but strong sliders are easy to install and function just as expected. Plus, they're available in colors to match your bike. Don't spend more, spend smart--purchase Acerbis chain sliders for replacements on your bikes.

Not Yet Reviewed

$28.01

Pro-X Racing Parts Clutch Baskets

Pro-X Racing Parts clutch baskets are precision-machined from heat-treated aircraft 7075-T6 billet aluminum alloy to OE standards. Sophisticated hard-anodizing guarantees extended life under severest racing conditions. Each Pro-X kit comes with the necessary hardware to make installation a snap. Features of Pro-X Racing Parts clutch baskets: * Design—Pro-X clutch baskets are designed to maximize strength through "feature aligned grain flow" and utilizes as-forged features that can only be produced using their precision process. We are able to produce higher mechanical properties and resistance to impact and fatigue. * Hard anodized--all clutch baskets are hard-anodized to produce an ultra-tough, abrasive-resistant surface and ensures a long life of smooth clutch operation through the elimination of wear on the sides of the clutch basket tabs. * PTFE-coated--specially added coating creates a near frictionless surface for the clutch plate tabs to glide upon. All clutch baskets come with pre-applied thread locker fasteners and an Inbus tool.

Not Yet Reviewed

$269.99

Wiseco Clutch Components

Wiseco is known for their craftsmanship and high performance products. These clutch components will help you get that clutch rebuilt and keep your ride shifting smoothly through the entire race. You're sure to find what you need here, with various gears, screws, and parts available to complete your clutch project. Find the right match for your application and get your ride back on the track.

Not Yet Reviewed

$0.69

EBC DRC Dirt Racer Clutch Kits

By far the best way to go, EBC DRC Dirt Racer clutch kits are total rebuild options, including all-driven lined plates and new springs to completely reset your clutch to the all-important original stack height from when the bike was new. DRC Dirt Racer clutch kits give smooth clutch take-up, using anti-swelling, alloy-impregnated, heavy-duty, cork-based facing for long-lasting and reliable clutch kits.

4.5 out of 5 stars ( 2 )

$155.77

ProTaper MX RS Rear Sprockets

ProTaper MX RS (Race Spec) rear sprockets are the ultimate choice for motocross performance. Constructed from 7075 T-6 heat-treated aluminum, these sprockets are precision CNC-machined to the strictest quality standards. They feature a proprietary mud groove design that results in 44 percent more tooth surface area, which dramatically increases sprocket life. Their deep-penetrating anodized finish is durable and looks great, too! The number of teeth is laser-etched onto each MX RS sprocket for easy identification. Outlast the competition with ProTaper MX RS (Race Spec) rear sprockets!

Not Yet Reviewed

$89.99

Wiseco Clutch Pack Kits

Upgrade to Wiseco clutch pack kits for extreme powersports riding conditions. Your worn-out clutch plates and springs need a change. Wiesco clutch pack kits have everything you need for your off-road bike and/or ATV. Each kit comes with new frictions, steels, and clutch springs, all made from premium-grade materials. Their frictions and steels are made to exact OEM tolerances and specifications and produce the same feel and wear resistance as stock plates. Their clutch springs are 8-10 percent stiffer than stock to ensure a positive clutch lockup every time. Do you have a slipping clutch pack? Wiseco clutch pack kits are an easy solution!

5.0 out of 5 stars ( 1 )

$209.99

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$269.99

ProTaper Front Sprockets

Outlast and outperform the competition with ProTaper front sprockets! They are precision-broached and machined from case-hardened chromoly steel to the strictest standards. These sprockets feature self-cleaning mud grooves to prevent dirt and mud buildup, along with lightening holes that reduce sprocket weight. ProTaper front sprockets have a special wear-resistant coating that helps to retain strength and durability, with an etched tooth number for easy identification.

Not Yet Reviewed

$29.99

Pro-X Racing Parts Clutch Slave Cylinder Rebuild Kits

Pro-X Racing Parts clutch slave cylinder rebuild kits are assembled with high-quality components all designed and manufactured to meet or exceed OEM parts. Each kit contains all the necessary components to rebuild your clutch cylinder and they are available for a wide range of applications. Choose the one that meets your needs.

Not Yet Reviewed

$64.99

EBC CSK Clutch Springs

New EBC CSK clutch springs prevent damage from prolonged exposure to heat and wear. They are OEM upgrades and are 10 percent stiffer than stock. The lever will be slightly stiffer which can wear your hand out riding in heavy traffic, but in return the clutch engages smoother and faster with the stiffer springs making takeoff smooth and shifting faster and less effort to speed shift.

5.0 out of 5 stars ( 3 )

$12.98

Pro-X Racing Parts Rear Sprocket Bolt Sets

Pro-X Racing Parts rear sprocket bolt sets contain bolts and flanged nylon lock nuts. The fasteners feature steel construction with a chrome finish to secure your rear alloy or steel sprockets.

Not Yet Reviewed

$9.99

Acerbis Chain Guide Inserts

Replace your worn-out chain guides with Acerbis chain guide inserts. These injection-molded polyurethane inserts are strong and use all OEM mounts and hardware. Acerbis chain guide inserts cost less and they look and wear better than stock.

Not Yet Reviewed

$22.06

Rekluse Clutch Core Manual Clutch Kits

Rekluse Clutch Core Manual clutch kits are professional-grade units offering improved durability and reliability over stock components. Constructed from double hard anodized billet aluminum components, they are lighter, stronger, and will perform better than stock. Features and benefits include: * Reduced clutch fade * Consistent and improved lever modulation * Strategic engineering increases oil flow, decreases operating temperatures and extends clutch life * Installation does not require modification of stock parts * Includes proprietary anti-drag steel drive plates

Not Yet Reviewed

$629.00