1PZ BA5-10T Centrifugal Clutch 3/4" Bore with 10T Sprocket and #40/41/420 Chain — Fits 2–6.5HP Engines

The 1PZ BA5-10T is a bolt-on centrifugal clutch with a 3/4" bore and 10-tooth sprocket, supplied with a #40/41/420 chain for direct use on go-karts, minibikes and small utility engines.

This clutch assembly is designed as a straightforward performance and usability upgrade for small engine vehicles that use a 3/4" output shaft. Built to fit a wide range of clone and OEM engines from 2 to 6.5 HP, the unit comes complete with a 10-tooth sprocket and matching chain so you can replace a worn clutch or convert a mower or engine-driven project into a chain-driven setup quickly.

Will this clutch fit my engine and vehicle?

The 1PZ BA5-10T fits engines with a 3/4" (0.75") shaft and is intended for 2–6.5 HP powerplants. It is compatible with many common small-engine platforms used on go-karts, minibikes and some lawn equipment.

• Compatible engines: Honda clones (GC160, GC190, GX120, GX140, GX160, GX200) and many 2–6.5 HP Briggs/clone models
• Works with Tecumseh-style engines with 3/4" shaft within the specified HP range
• Physical requirement: 3/4" straight shaft with keyway or set-screw mounting

How does the clutch change vehicle performance and usability?

As a centrifugal clutch, it engages automatically as engine RPM rises, allowing hands-free power transmission and smoother starts. This reduces stalling compared to direct-drive setups and makes low-speed maneuvering easier for recreation or light-duty work.

• Automatic engagement based on RPM — no manual lever needed
• 10-tooth sprocket for compact chain routing and moderate gearing
• #40/41/420 chain included for immediate installation

What’s included and what should I expect during installation?

Each box contains one centrifugal clutch with a 3/4" bore and a 10T sprocket installed, plus a compatible length of #40/41/420 chain. Installation typically requires basic hand tools and standard mechanical skills to mount the clutch to the engine shaft and tension the chain correctly.

• Package contents: 1 x 10-tooth centrifugal clutch, 1 x #40/41/420 chain, 1PZ branded box
• Tools commonly needed: socket set, wrenches, screwdriver, torque or torque feel for set screws
• Tip: check shaft keying and secure with recommended fasteners; adjust chain tension after initial run-in

Is this clutch durable and suited for regular use?

The clutch is manufactured from materials chosen for small-vehicle duty cycles and routine recreational use. While built to be robust for go-karting and minibike applications, lifespan depends on load, maintenance and operating conditions.

• Constructed for small engine drive applications and light recreation
• Recommended for 2–6.5 HP engines within proper mounting alignment
• Service life influenced by correct installation, chain alignment and periodic inspection

Who is this product for? The 1PZ BA5-10T centrifugal clutch is aimed at hobbyists, DIY mechanics and small-vehicle owners who need a plug-and-play clutch and chain solution for go-karts, fun karts, minibikes (including Baja MB165/MB200 style), and conversions of lawn equipment to drive systems. If you have a 3/4" shaft engine in the 2–6.5 HP range and want an easy-to-install clutch with an included chain, this kit is made for those practical upgrades and replacements.