Max-Torque
Max-Torque SS1334SP 13-Tooth Clutch Driver Sprocket with Bronze Bushing for 3/4" Bore #35 Chain
Max-Torque: Over Six Decades of Clutch Innovation
Few brands in the small engine performance world carry the legacy that Max-Torque does. Founded in 1957, Max-Torque has spent more than six decades establishing itself as a worldwide leader in the design, engineering, and manufacturing of clutches for small engine applications. From backyard go-kart builds to competitive karting circuits, the brand's products have become a benchmark for reliability and precision across generations of enthusiasts and OEM manufacturers alike.
What sets Max-Torque apart isn't just longevity — it's a relentless focus on engineering integrity. The brand pioneered several design features that competitors have since tried to replicate, but the original execution remains difficult to match. A proprietary ground sleeve delivers an ultra-smooth finish for reduced friction and extended bushing life, while the stainless steel clutch spring resists rust and maintains consistent shoe pressure over the long haul. These details matter enormously when performance and safety are on the line.
The Iconic SS Series and Racing Clutch Lineup
At the heart of the Max-Torque catalog is their celebrated Clutch & Components lineup, anchored by the legendary SS series centrifugal clutch. Introduced in 1970, the SS clutch quickly became the most popular style used by American go-kart manufacturers and remains a standard specification at racing tracks and OEM facilities to this day. Its six sintered metal clutch shoes distribute centrifugal loading force evenly across 345 degrees of the drum circumference, reducing drum distortion and delivering smooth, automatic engagement that closely mimics an automatic transmission feel — all controlled through a single throttle input.
Beyond the SS series, Max-Torque offers a broad range of racing clutches in multiple configurations and engagement speeds, making it straightforward to dial in the right power transfer characteristics for any application — whether that's a box-stock clone engine racing class, a predator-powered mini bike, or a vintage kart running a McCulloch or West Bend powerplant. The brand even supports vintage engine fitments, recognizing the importance of preserving the history of the sport.
Components, Replacements, and Versatility
Max-Torque's commitment to the end user extends well beyond complete clutch assemblies. The brand offers an extensive range of replacement components — including clutch shoes, drums, drive sprockets with bronze bushings, snap rings, set screws, keys, garter springs, and bushings — so racers and hobbyists can service and rebuild their clutches rather than replace them outright. This depth of parts availability is a major reason why Max-Torque has maintained strong loyalty among karting and mini bike communities for decades.
Whether you're equipping a new build, sourcing an OEM-spec replacement, or chasing a competitive edge on race day, Max-Torque Clutch & Components represent one of the most trusted options in the field.