doinal #35 Rear Sprocket Kit — 65T Alloy Sprocket, 108-Link Chain & Flywheel Adapter for Go-Karts

The Doinal #35 rear sprocket kit is a complete replacement and upgrade package that includes a 65-tooth alloy sprocket, a 108-link #35 chain, and a flywheel adapter for electric go-karts and mini off-road vehicles.

This compact kit is built for riders and mechanics who need a durable drivetrain replacement that fits a range of small electric vehicles — from 72V 5000W hub motors to popular off-road mini bikes and ATVs. Made from quality alloy, the sprocket is machined for consistent tooth profile and straightforward maintenance, while the matched #35 chain and flywheel adapter make installation faster and reduce the chance of mismatched components.

Will this sprocket and chain fit my electric go-kart or mini bike?

The Doinal #35 kit is designed to match vehicles that use a #35 chain standard and a 65-tooth rear sprocket. Confirm your vehicle’s chain pitch and mounting dimensions before ordering to ensure compatibility. If your motor or swingarm uses the listed measurements, this kit will replace worn parts directly.

• Chain size: #35 standard
• Sprocket teeth: 65T, overall diameter 200 mm (7.8 in)
• Mounting hole diameter: 7 mm (0.27 in)
• Center hole (hub) diameter: 54 mm (2 in)
• Chain length supplied: 108 links (uncut for custom fit)

How easy is installation and maintenance?

Installation is straightforward for anyone with basic tools and experience working on small drivetrains. The kit arrives with the sprocket, full-length chain, and a flywheel adapter to align the sprocket with common motor hubs, reducing the need for extra parts. Routine cleaning and lubrication are simple thanks to the alloy sprocket’s accessible tooth profile.

• Comes with flywheel adapter to match common motor hubs
• Chain supplied at 108 links — trim to required length
• Alloy sprocket resists corrosion and cleans easily
• Standard mounting hole pattern for typical mini vehicle hubs

What performance changes should I expect after swapping to this kit?

Changing to a 65T sprocket influences gearing by increasing rear sprocket circumference, which typically boosts torque at the wheel and slightly lowers top speed, depending on your front sprocket size. Because the package includes a new chain and adapter, you also get improved reliability if your original parts were worn. This is a practical upgrade for heavier riders or off-road use where low-end traction matters more than peak speed.

• 65 teeth increases wheel torque relative to smaller rear sprockets
• New chain reduces stretch-related slippage
• Flywheel adapter improves alignment and drivetrain life
• Best for load-bearing and off-road traction improvements

Who is this for? The Doinal #35 65T sprocket kit is aimed at hobbyists, DIY mechanics, and small-vehicle owners who need a reliable replacement or want a modest gearing change for electric go-karts, Razor-style dirt bikes, RX/MX series minibikes, and small ATVs. Choose this kit if your vehicle uses a #35 chain pitch and you want a complete, ready-to-fit package that reduces sourcing multiple separate parts. If you’re unsure about fitment, measure your current sprocket’s mounting hole pattern and chain pitch, or contact us with your vehicle model and motor spec for guidance.