Transmission & Drivetrain

Nic Woods Racing Hard Compound Clutch Belts

Nic Woods Racing offers a variety of parts and accessories for Jr. Dragsters, including hard compound clutch belts. They're available in multiple widths for overdrive and non-overdrive applications. These radius tooth belts provide longer lasting, more consistent performance for your race car.

5.0 out of 5 stars ( 2 )

$42.99

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$46.50

Nic Woods Racing Shockwave Clutch Rebuild Kits

Nic Woods Racing Shockwave clutch rebuild kits include the components needed to overhaul your clutch. Choose between 7.90, 7.90 HD, 8.90, or the 11.90 kit. Kits include: * Primary steel coated rollers * Primary plastic rollers * Secondary spray coated helix rollers * Driven spring and primary spring * Rollers include new stainless steel hardware

Not Yet Reviewed

$210.70

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$223.99

JR Race Car Shockwave O/D Stationary Sheaves

Shockwave clutches from JR Race Car provide superior performance and improved consistency, so when they need serviced JR also offers the replacement parts to do the job correctly and with confidence. JR Race Car Shockwave O/D stationary sheaves are quality components that will provide a stable surface for the belt to ride against, providing the proper performance required, just like the originals they are replacing.

Not Yet Reviewed

$156.46

Nic Woods Racing Shockwave Clutch Springs

Nic Woods Racing Shockwave clutch springs are available in rear driven or primary styles to find just the right combination you are wanting for your clutch setup. They are also offered in different sets with a primary and a rear driven spring together. Choose the springs you prefer.

5.0 out of 5 stars ( 1 )

$21.65

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$50.60

Nic Woods Racing Shockwave Overdrive Bolt Kits

Nic Woods Racing Shockwave overdrive bolt kits feature ARP fasteners for secure attachment. Kits include: * Stainless steel ARP 12-point bolt—4.5 in. long * Hardened key * Stainless steel washer * Bearing * Bearing and bolt locator

Not Yet Reviewed

$36.40

Nic Woods Racing Shockwave Clutch Roller Kits

Nic Woods Racing offer primary and secondary Shockwave clutch rollers. They are available in different materials, Delrin®, black coated steel, and durable plastic, so you can choose to replace or upgrade. All roller kits include hardware.

5.0 out of 5 stars ( 1 )

$52.50

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$65.99

Race Star 53 Jr. Dragster Wheel Hubs

Race Star offers 53 Jr. Dragster wheel hubs for a variety of applications. These replacements are manufactured from original materials and specifications to ensure proper fit and optimum performance on the track. Order the hubs recommended for your vehicle.

5.0 out of 5 stars ( 1 )

$67.99

EK Chain Silver Pro Kart Chains

EK Chain's Silver Pro kart chains combine the qualities of high-tensile strength, low wear, impact-resistance, anti-kinking performance, and fatigue toughness to produce the best kart racing chain available. These karting competition drive chains are nickel-plated for protection and include three Master links. Order the chain model designed to fit your application needs.

Not Yet Reviewed

$26.99

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$649.99

JR Race Car Shockwave Clutch Removal Tools

JR Race Car Shockwave clutch removal tools are here for you when you need to remove your standard or overdrive spiders. These simple tools can make the whole project take a fraction of the time. When you need to service your Shockwave overdrive, JR Race Car clutch removal tools ease the pain.

Not Yet Reviewed

$38.18

JR Race Car Jr. Dragster Sprockets

JR Race Car has Jr. Dragster sprockets to get you moving. Their high-strength steel front sprockets are for #35 or #415 chain. JRC rear sprockets are hard-anodized aluminum material. Each half is precision-machined so two together mount straight and flat. And each half is lightened for less weight and is labeled with its size for an easier matchup. Get the power to the ground with JR Race Car has Jr. Dragster sprockets.

5.0 out of 5 stars ( 2 )

$30.64

KTI Racing Drive Clutches

KTI Racing Drive clutches are engineered to deliver precise, repeatable performance with a focus on consistency, control, and durability. Similar in concept to the Overdrive Shockwave clutch, this system is designed to provide more consistent engagement within a tighter RPM window, resulting in smoother, more predictable launches and improved overall drivability. Each clutch system comes fully configured with carefully selected internal components to deliver balanced performance right out of the box, eliminating guesswork during setup. A lightweight protective cover helps shield internal components while promoting faster rotational acceleration for improved throttle response. Additionally, KTI Racing's one-piece extended keyway design increases contact area deep into the fixed sheave, reducing stress on the keyway interface and helping protect the crankshaft from damage. Built for racers who demand reliability and precision, KTI Racing drive clutches offer a refined, performance focused solution for consistent results, pass after pass.

Not Yet Reviewed

$335.50

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$800.63

JR Race Car Driven Clutch Springs

Replace your worn-out clutch spring with JR Race Car driven clutch springs. They are available in various models and colors to fit most applications. Keep your clutch in peak performance and ready for the next race, with a new clutch springs.

5.0 out of 5 stars ( 1 )

$20.50

Nic Woods Racing Shockwave Parko Coated Flyweights

Nic Woods Racing Shockwave Parko coated flyweights feature a "lubraplating" process used at Clay Smith Cams, that adds another layer of anti-wear protection and prevents pre-mature galling. Nic Woods feels Parko coating is a must. Several styles and weights are offered; choose the set needed for your Shockwave clutch.

Not Yet Reviewed

$80.00

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$99.99

JR Race Car Chain Master Links

JR Race Car has master links for various Regina Gold chain models. The clip-style links offer easy maintenance, since they can be taken apart with a pair of plyers—no chain-break tool is needed to remove the chain for sprocket changes. Order the master link designed to fit your application.

5.0 out of 5 stars ( 2 )

$6.99

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$8.99

KTI Racing Roller Bearing Replacement Kits

KTI Racing Roller Bearing Replacement Kits are designed to support smooth, reliable operation of the Series Driven / Rear Overdrive Shockwave clutch system by restoring precise rotational movement during engagement and release. These high quality roller bearings interface seamlessly with the helix assembly and are engineered for proper compatibility with the movable sheave, ensuring consistent clutch response and reduced friction under load. The kit includes all required installation hardware for efficient servicing and dependable fitment. For best performance and long term durability, the roller bearings should be replaced twice per season or at the first sign of wear, helping maintain smooth operation and prevent premature clutch component damage.

Not Yet Reviewed

$57.75

KTI Racing Clutch Springs

KTI Racing clutch springs are precision-engineered to deliver consistent engagement and repeatable performance in high-demand racing applications, particularly Jr. Dragster. Manufactured from high-quality spring steel and carefully calibrated for accurate rate control, these springs help fine-tune clutch response to match engine output, track conditions, and driving style. Designed for durability under extreme heat and repeated load cycles, KTI Racing clutch springs maintain their tension and performance, run after run. Ideal for racers seeking improved launch consistency, responsive backshifting, and reliable clutch operation, these springs provide a critical tuning component for maximizing drivetrain performance and control. Available in a variety of color options.

Not Yet Reviewed

$23.25

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$26.35

KTI Racing Delrin Roller Replacement Kits

KTI Racing Delrin® roller replacement kits are designed to support smooth and consistent operation in high performance driver clutch systems, particularly Jr. Dragster applications. Manufactured from high-quality Delrin®, these rollers interface with the movable sheave to help reduce friction and promote controlled, repeatable clutch engagement and release. Engineered for proper fit within the compatible spider assembly, each kit includes all required installation hardware for efficient and dependable servicing. To maintain optimal clutch performance and reliability, Delrin® rollers should be replaced twice per season or at the first signs of wear, ensuring consistent operation under demanding racing conditions.

Not Yet Reviewed

$59.25

KTI Racing Clutch Roller Assembly Maintenance Kits

KTI Racing clutch roller assembly maintenance kits are engineered to restore smooth, dependable operation in high performance driver clutch applications. Precision-manufactured from aircraft-grade steel, the rollers interface directly with the flyweights to deliver consistent clutch engagement and release while withstanding repeated high load cycles. Designed for proper fit and function within the compatible spider assembly, each kit includes all necessary installation hardware to streamline service and replacement. To maintain optimal performance, clutch response, and long term reliability, steel rollers should be replaced twice per season or immediately at the first signs of wear.

Not Yet Reviewed

$59.25

Max Torque Box Stock/Clone Clutches

Max Torque Box Stock/Clone clutches was designed for the Clone engine market. They are very similar to the SS-Series clutch but are able to withstand the rigorous requirements of the Clone racing engine. They are offered in different chain sizes and sprocket tooth counts. Choose the proper Max Torque Box Stock/Clone clutch for your Kart.

Not Yet Reviewed

$84.99

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$147.99

EK Chain Master Link for Pro Kart Chains

EK Chain offers a variety of drive chain, sprocket, and connecting link components—including these Pro master links for racing kart chains. They combine the qualities of high tensile strength, low wear, impact-resistance, anti-kinking performance, and fatigue toughness to provide the best kart racing chain links available. Order the master link chain for your application.

Not Yet Reviewed

$4.99

Max Torque Chain Sprockets

Mate your Max Torque clutch with the proper Max Torque chain sprockets. These steel choices are available for all their clutches in several different tooth counts to fit your application needs.

Not Yet Reviewed

$19.99

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$73.99

JOES Racing Products Kart/QM Rear Hubs

JOES Kart/QM rear aluminum hubs are black anodized and laser-etched for a durable finish. They're precision-machined to roll truer than knock-offs. Use the short version or the long version to adjust your kart or quarter midget for the conditions. Concentric machining and quality finishes result in faster times. These rear hubs fit 1 1/4 in. axles, with sealed bearings providing smooth operation. Standard American bolt pattern for both (drilled/tapped) 1/4 in.-28 and 5/16 in.-18 on 2.5 in. bolt circles.

Not Yet Reviewed

$54.99

Half Scale Dragsters Polar Clutch Replacement Components

Half Scale Dragsters carry the Polar clutch replacement components you need for optimum shifting performance. From sheaves, sleeves, springs, and spacers, to bushings, buttons, and posts, Half Scale Dragsters deliver the parts to keep your Polar clutch consistent, smooth, and on track for the win!

Not Yet Reviewed

$6.99

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$590.99

KTI Racing Driven Side Post Kits

KTI Racing driven side post kits are engineered to deliver smooth, consistent performance in high-load driven clutch applications. Precision-machined from high-quality aluminum, these side posts guide helix movement to ensure reliable clutch engagement and release while minimizing friction and wear. Designed for accurate fit and dependable operation within the driven overdrive clutch system, each kit includes all necessary installation hardware for quick and efficient servicing. To maintain peak performance, consistent shifting, and long-term reliability, driven side posts should be replaced twice per season or at the first sign of wear.

Not Yet Reviewed

$24.95