10L0L Secondary Driven Clutch Kit for Yamaha G2–G28 (1985–2007) — Dual‑Angle Sheaves & Heavy‑Duty Spring

A complete secondary-driven clutch kit from 10L0L that replaces OEM JN6-G6270-00 / JN6-G6271-02 / J55-G6270-01 and includes machined sheaves, heavy-duty spring and a drive belt for Yamaha G2–G28 4-cycle golf carts (1985–2007).

This 10L0L secondary driven clutch kit is engineered to restore reliable power transfer and extend belt life on compatible Yamaha 4-cycle gas golf carts built between 1985 and 2007. The kit combines solid aluminum alloy sheaves machined at dual angles, a stiffer spring to hold the power band longer, and a drive belt sized for a direct swap. It’s supplied as a bolt-on assembly to simplify replacement during routine clutch maintenance or full clutch overhaul.

How does the clutch deliver both stronger acceleration and higher top speed?

The sheaves are machined with optimized dual-angle profiles: steeper entry angles for firmer belt grip at low RPMs and shallower carriage angles that let the belt ride higher at speed. This balance reduces slippage during takeoff while allowing efficient power transfer at cruising speeds.

• Dual-angle sheave machining for low-end torque and high-end rollout
• Solid aluminum alloy sheaves to maintain consistent profiles under heat
• New drive belt matched to the sheave geometry for optimal contact

Why include a heavy-duty spring instead of reusing the original spring?

The included stiffer spring postpones the clutch’s upshift so the engine stays in its stronger RPM range when climbing or hauling. Using a softer, worn spring can let the transmission upshift too early, producing bogging and loss of responsiveness on inclines.

• Heavier spring improves hill-climbing performance
• Reduces premature upshifting and improves throttle response
• Designed to resist fatigue longer than typical stock springs

What preventative parts should I change along with this clutch kit?

To protect the new belt and clutch surfaces, replace the transmission oil seal whenever you service the clutch; oil contamination quickly degrades belt friction. Also inspect sheaves for deep grooves—if they exist, replace the sheaves rather than installing belt-only to avoid rapid wear.

• Oil seal replacement prevents clutch contamination (oil seal not included)
• Install complete kit (sheaves, spring, belt) for even wear and proper engagement
• Check ramp shoes, key, spacers and washers included in the kit during assembly

Is this kit durable and heat-resistant compared to OEM units?

The clutch components are cast and machined from a solid aluminum alloy that sheds heat more effectively than many steel parts used in older designs. Better heat dissipation helps avoid belt glazing and reduces spring fatigue during heavy or repeated use.

• Aluminum alloy construction improves thermal conductivity and longevity
• Sheaves are precision-machined to maintain belt contact geometry
• Includes all internal hardware: ramp shoes, woodruff key, spacers and washers

Who is this for: This 10L0L secondary driven clutch kit is aimed at Yamaha G2, G8, G9, G11, G14, G16, G20, G21, G22 and G28 owners (1985–2007) who want a reliable, bolt-on upgrade to restore clutch performance. It’s a good match for DIY mechanics and service shops replacing worn clutch components, drivers who need stronger hill-climbing response, and anyone replacing a slipping belt. Note: the transmission oil seal is not included and should be inspected or replaced during installation to prevent contamination and premature belt wear.