10L0L Secondary Driven Clutch Kit for Yamaha G-Series Golf Carts (1985–2007) — Full Aluminum Sheaves, Heavy-Duty Spring

Complete secondary driven clutch kit for Yamaha G-series golf carts, including machined aluminum sheaves, heavy-duty spring, and drive belt to restore acceleration and top-end performance.

This 10L0L replacement secondary driven clutch kit is engineered for Yamaha G2, G8, G9, G11, G14, G16, G20, G21, G22 and G28 4-cycle gas golf carts (model years 1985–2007). It replaces OEM numbers JN6-G6270-00, JN6-G6271-02 and J55-G6270-01 and arrives as a full assembly: fixed and sliding sheaves, spring and seat, ramp shoes, woodruff key, spacer, washers and a matched drive belt. All aluminum components are precision-machined to control belt contact and heat build-up for longer life and more reliable power transfer.

How does this kit affect my cart’s start-up and hill-climbing ability?

The kit’s optimized sheave angles and heavier spring change how the belt rides under load, giving stronger initial bite and holding the engine in its powerband during climbs. That means quicker launches from a standstill and less bogging when you face inclines.

• Steeper entry angles produce tighter belt grip for stronger takeoffs.
• Heavy-duty spring delays premature upshift under load for sustained torque.
• Ramp shoes and matched parts ensure smooth engagement on hills.

Will the aluminum construction really help under heavy use?

Yes — aluminum alloy sheaves dissipate heat faster than many stock steel units, reducing the chance of belt glazing and spring fatigue during prolonged runs. Cooler sheaves preserve belt life and maintain consistent engagement over time.

• Solid aluminum body for improved thermal conductivity and lower operating temps.
• Precision machining to minimize vibration and uneven wear.
• Durable finish resists corrosion in outdoor conditions.

Can I install just the spring and belt, or should I replace the whole clutch assembly?

While a spring-and-belt swap can be a temporary fix, worn sheaves with grooves or surface damage will rapidly destroy a new belt. Installing the full kit ensures all contact surfaces are correct and prevents premature belt failure.

• Includes fixed and sliding sheaves so belt rides on smooth surfaces.
• Comes with ramp shoes, key, spacer and washers for complete reassembly.
• Oil seal is required for best results (seal not included) to avoid contamination.

What do I need for a proper installation and long-term reliability?

Basic hand tools and a service manual for torque specs are usually sufficient to replace the secondary clutch. Be sure to inspect and replace the transmission oil seal and clean the assembly area to prevent oil contamination that causes slipping.

• Bolt-on assembly design for straightforward installation with common tools.
• Replace the oil seal during installation to prevent clutch contamination.
• Verify belt alignment and torque fasteners to manufacturer specifications.

Who is this for: This 10L0L secondary driven clutch kit is aimed at owners and technicians who service Yamaha G-series 4-cycle gas golf carts from 1985–2007 and need a durable, performance-minded replacement that improves launch response, hill performance and component longevity. It’s a recommended upgrade when the existing clutch shows wear, belt slipping, inconsistent engagement, or if you want to restore original drive characteristics with higher thermal stability.