Precise Vehicle Fitment
CNC rear axle chain tensioner fits CRF250L CRF250M (2012–2019), CRF250R 2017–2018, CR250R, 140cc pit bikes and CRF250F.
Dimension: 15mm diameter, 31mm width, 89mm length. Please verify size before purchase.
Accurate Chain Adjustment
Built-in scale ensures symmetrical adjustment on both sides of the rear axle. Effectively avoids chain slack and slipping, stabilizes power output and reduces irregular tire wear.
CNC Machined High Durability
Dual-side scale with integrated adjusting rod for perfect axle alignment. Lightweight solid construction resists bending, ideal for motocross and off-road trail riding.
Stable Riding Performance
Fine-tune chain tension easily to eliminate slippage and keep drivetrain running smoothly.