Amp 520SS12HT-23/20 - High Torque 520 12T Racing Sprocket for Golden Hypertorque & Honda CRF450L Series

PLEASE NOTE: This sprocket does fit the Honda CRF450L spline BUT it may cause chain rub on the motor casing. Please be aware that using this 12t sprocket on the CRF450 series bikes may require case modifications. 

Upgrade your ride with the Amp 520SS12HT-23/20, a high-performance 12-tooth 520 racing sprocket engineered for maximum torque and acceleration. Designed specifically for the Golden Hypertorque motor and Honda CRF450L, CRF450X, and CRF450RL motorcycles, this sprocket is built to deliver unmatched durability and performance on the track, trails, and hills.

Key Features:

• Precision Engineered for Power – Optimized tooth design enhances torque delivery, improving acceleration and hill-climbing ability.
• Hardened Steel Construction – Built for maximum durability, resisting wear and deformation under high-stress riding conditions.
• Galvanized Silver Coating – Corrosion-resistant finish ensures long-lasting performance in all weather conditions.
• Integrated Rubber Dampener – Reduces chain noise for a smoother, quieter ride.
• Perfect Fit for Honda CRF450 Series – Specifically designed to fit the CRF450L, CRF450X, and CRF450RL models.

Compatible Honda Models:

• 2019-2020 Honda CRF450L
• 2021-2023 Honda CRF450RL
• 2019-2023 Honda CRF450X

This heavy-duty racing sprocket is the perfect upgrade for riders looking for more torque, better acceleration, and improved chain noise reduction. Whether you ride a Honda CRF450L, CRF450X, or CRF450RL, or you have the Golden Hypertorque motor, this sprocket delivers reliable performance for demanding terrain.

ATTN: Golden Motor has just recently changed the size of the 10Kw BLDC motor keyway to 8mm. This sprocket will fit the previous 1/4" keyway version of the 10kw motor, not the newer 8mm keyway version.

High performance sprocket made specifically to fit the Golden Motor 10KW BLDC.
Sprocket comes complete with keybar and stainless steel keybar.
PLEASE NOTE: This sprocket is best fitted for standard 520 chains. Some o-ring or x-ring chains may exceed the allowable width of the inset channel adjacent to the sprocket teeth.

High performance sprocket made specifically to fit the Golden Motor 3KW BLDC.
Sprocket comes complete with key bar and stainless steel set screws.
PLEASE NOTE: This sprocket fits standard and o-ring/x-ring 428 chains.

ATTENTION: This sprocket is for QS 138 70H motors that were made in 2020 and early 2021. Please measure your QS 138 70H motor shaft before ordering this sprocket. This sprocket is 16mm diameter measuring from inner diameter of shaft and 20mm measuring the outer diameter of the shaft. Please also check the sprocket drawing in the images to insure that the spline width is accurate to your motor shaft. QS is notorious for changing their shaft sizes so please note that AmpSprockets cannot be responsible for returns if you order the wrong size for your motor.

High performance sprocket made specifically to fit the spline shaft QS Motor 138 3000W 70H V2 Motor. Sprocket comes complete with ring retainer clip. This sprocket works well with 420 standard and O-ring chains.