MurDvll 40T High-Torque Rear Sprocket for Coleman Mini Bikes — Zinc-Plated Carbon Steel, 3+4-Hole Fit

MurDvll's 40-tooth high-torque rear sprocket is a durable, zinc-plated replacement designed to restore efficient power transfer and extend drivetrain life on compatible Coleman mini bikes.

This precision-cut rear sprocket is engineered for Coleman models including B200R, B200, B200RSV, RT200, RB200, CT200U, CT200UEX, and BT200X. Built around a high-strength carbon steel core with a corrosion-resistant zinc finish and a 3+4-hole cassette pattern, it accepts 40/41/42-tooth chain configurations and aims to reduce wear while maintaining smooth chain engagement. The design balances torque retention and rotational efficiency to suit frequent or spirited riding.

How will this sprocket affect my bike's performance?

With 40 teeth and a profile matched to common mini-bike chain pitch, the sprocket helps minimize torque loss and maintain steady power delivery. The precise tooth geometry reduces chain slippage and promotes longer component life without changing engine output.

• 40-tooth profile optimized for torque retention and steady acceleration
• Precision-cut teeth reduce chain skipping and vibration
• Compatible with 40/41/42 pitch chains for flexible fitment

Will it fit my Coleman B200 / CT200 series mini bike?

This MurDvll sprocket is made specifically for the listed Coleman models and uses a 3+4-hole cassette design to accommodate common mounting patterns. Confirm your bike’s bolt pattern against the sprocket before installation to ensure proper alignment.

• Direct compatibility with B200R, B200, B200RSV, RT200, RB200, CT200U, CT200UEX, BT200X
• 3+4-hole cassette accepts multiple bolt configurations
• Check hub dimensions and bolt spacing for perfect fit

What materials and finishes protect the sprocket from wear and corrosion?

The sprocket combines a high-strength carbon steel core for structural durability with a zinc-plated surface finish to resist rust and abrasion. This pairing lowers long-term chain wear and reduces the need for frequent replacements in variable riding conditions.

• Carbon steel core for impact and fatigue resistance
• Zinc plating provides corrosion protection and smoother operation
• Precision machining keeps tooth profiles accurate under load

How difficult is installation and what should I check after fitting?

Installation is straightforward for anyone familiar with standard rear-sprocket or wheel removal. After mounting, confirm chain alignment, torque the mounting bolts to spec, and verify smooth rotation under load before returning to regular use.

• Basic hand tools required; wheel or sprocket removal may be necessary
• Inspect chain line, tension, and bolt torque after install
• Run a short, cautious test ride to ensure smooth engagement

Who is this for: Riders and home mechanics who own compatible Coleman mini-bike models and want a robust, precision-engineered replacement sprocket that reduces drivetrain wear and improves transmission efficiency. It’s suited for regular recreational riders, track-day hobbyists, and anyone who prefers a long-lasting, corrosion-resistant sprocket that fits standard 40–42 chain setups.