Heavy Hitter 420 Primary Chain Drive Conversion Kit

Name: GritShift Heavy Hitter 420 Primary Chain Drive Conversion Kit - Heavy Hitter 420 Primary Chain Drive Conversion Kit
Brand: GritShift
SKU: 44225454276837
Price: 99.89 USD
Availability: InStock
Rating: 4.7857 (6 reviews)

4.5 (1,234)

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$99.89

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Black

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The Heavy Hitter 420 Primary Chain Drive Conversion Kit is the lightest 420 primary kit on the market for the Sur Ron LBX, Segway X160/X260, E Ride Pro, Ventus ONE+, and 79Bike Falcon platforms. Built for riders who have pushed stock belts past their limits with upgraded motors and controllers. Pairs a 7075-T6 billet aluminum rear sprocke

4.8

28 ratings

Super light, very high quality durable design. Much louder than a belt but it sounds great. Installed on the Eridepro SR, you have to use the Surron side of the motor sprocket facing outward. Use a laser to align the two sprockets. 3/4” chain slack. You may have to use a dremel and grind a few of those metal fins off of the motor. The final drive chain can possibly rub on the back of the motor when trying to achieve the correct slack.

kevin · September 15, 2026