KART SUPPLY 18T C-Sprocket 5/8″ Bore 420 Chain
$11.99 on Amazon.com (as of June 29, 2026, 8:12 PM EST) View details ↗
Upgrade your go-kart’s performance with the KART SUPPLY 18 Tooth C-Sprocket, engineered for 40/41/420 chain applications. This high-quality sprocket features a 5/8" bore and requires a 3/16" key for secure installation. Designed to optimize top-end speed, it delivers superior acceleration compared to stock 10-tooth sprockets—though it may reduce initial take-off speed due to increased gearing.
Ideal for racing applications where straight-line speed is critical, this sprocket pairs well with most 30 Series torque converters. Note: For compatibility with certain 30 Series plates, a 5/8" spacer or minor modifications may be needed to ensure proper chain clearance. Choose KART SUPPLY for reliable, high-performance components built to last.







