Gekufa 60-Tooth Go-Kart Sprocket for #40 #41 420 Chain — 2-1/8" Bore, 8-Hole Heat-Treated Steel

Gekufa's 60-tooth go-kart sprocket with a 2-1/8" center bore fits #40, #41 and 420 chain drive systems for dependable rear-axle power transfer.

This heavy-duty replacement sprocket is engineered for hobby go-karts, mini-bikes, ATVs, and rear-axle builds that use #40, #41 or 420 chain sizes. With a 60-tooth profile and an 8-hole mounting pattern, it offers a balanced contact surface for chain engagement and improved durability over light stamped alternatives. Read the specifications and mounting notes below to confirm fitment before install.

Will this sprocket work with my kart's chain and axle?

Measure your existing setup before ordering. This sprocket accepts #40, #41 and 420 chains and has a 2-1/8" (approx. 54 mm) center bore; it is not compatible with #35 chains or systems requiring a different bore diameter.

• Chain compatibility: #40, #41, 420
• Center bore: 2-1/8" (54 mm) — confirm hub adapter if required
• Outside diameter: 9-3/4" (approx.) to check wheel well clearance
• Not universal — compare bolt pattern and axle type

How does the 8-hole pattern affect installation and performance?

The sprocket's eight mounting holes distribute load evenly across the hub, which reduces wobble and concentrates stresses across more fasteners. That layout helps maintain stable chain alignment and contributes to consistent engagement during acceleration and deceleration.

• 8-hole bolt pattern for balanced load distribution
• Improved stability over single- or three-hole designs
• Requires matching hub or proper adapter for correct fit

What materials and durability features should I expect?

Gekufa manufactures this sprocket from heat-treated steel designed for resistance to wear and repeated chain contact. The thicker steel profile and heat treatment provide a longer service life than untreated stamped or cast alternatives under normal recreational use.

• Heat-treated steel construction for wear resistance
• Precise tooth profile to encourage smooth chain engagement
• Intended for replacement, repair, or performance upgrade projects

What is included with the sprocket and what will I need to supply?

The package contains one 60-tooth sprocket only. Mounting hardware, chain, hub adapter, and axle nuts or bolts are not included, so you’ll need to reuse or purchase the correct fasteners and adapters separately.

• Included: 1 × 60T sprocket (8-hole, 2-1/8" bore)
• Not included: chain, bolts, nuts, hub adapter, or mounting hardware
• Confirm bolt spacing and bore size before drilling or modifying

Who is this for? This Gekufa 60-tooth sprocket is aimed at DIY mechanics, kart hobbyists, backyard builders, and small-vehicle owners who need a robust replacement or upgrade compatible with #40/#41/420 chain systems. If your project requires a 2-1/8" bore and an 8-hole mounting pattern—or you can adapt an existing hub—this sprocket provides a durable option for regular recreational riding. Do a careful comparison of tooth count, bore diameter, overall diameter, and bolt pattern with your original part before purchase to ensure correct fitment and safe operation.