The Heavy Hitter 520 Ultra Bee Super Sprocket is a one-piece rear sprocket CNC machined from 7075-T6 billet aluminum for the Sur Ron Ultra Bee, sold here at GritShift. It comes in 46, 50, 54, 58 and 60 tooth sizes and is built for higher-power builds, aggressive enduro terrain and 18/21 inch wheel conversions.
Specs verified September 2026 against the live GritShift product page.
Specifications
| Chain pitch | 520 |
|---|---|
| Position | Rear wheel |
| Material | 7075-T6 billet aluminum, machined from a single piece |
| Tooth counts | 46T, 50T, 54T, 58T, 60T |
| Weight | 1.02 lb (46T), 1.12 lb (50T), 1.24 lb (54T), 1.42 lb (58T and 60T) |
| Tooth profile | Proprietary profile for smoother chain engagement and longer wear on chain and sprocket |
| Mounting hardware | Not included; sprocket only, reuses the original mounting hardware |
| Built for | Higher-power Ultra Bee builds, rocky enduro terrain, 18/21 in wheel conversions |
| Design goal | Maximum strength with rotating mass kept as low as possible |
What bikes does the Heavy Hitter 520 Ultra Bee Super Sprocket fit?
- Sur Ron Ultra Bee
Why does the Ultra Bee need a stronger 520 sprocket?
Heavy Hitter developed the 520 Super Sprocket for riders who push an Ultra Bee past what a typical aluminum sprocket was designed to take. Many aftermarket sprockets trade strength for weight, or rely on generic machining that leaves rough tooth profiles and weak structural sections. Under high horsepower, or after repeated impacts in rocky terrain, those sprockets can bend, wear out early, or engage the chain inconsistently. This one is cut from a single piece of 7075-T6 billet so the structure stays rigid while rotating mass stays low.
What does the tooth profile do for chain life?
The sprocket carries a proprietary tooth profile that Heavy Hitter machines for smoother chain engagement. Smoother engagement reduces wear on both the chain and the sprocket teeth and extends service life compared with conventional designs. The five tooth counts, 46 through 60, give room to re-gear an Ultra Bee for an 18/21 wheel setup or for technical terrain, and the product page notes that choosing the right gearing can also reduce load on the stock motor and controller, which helps long-term reliability.
Which Heavy Hitter parts pair with this sprocket?
The sprocket ships on its own, so you reuse the original mounting hardware from the sprocket it replaces. The Heavy Hitter Ultra Bee F/R Brake Rotor Upgrade matches the cut style of the Heavy Hitter sprocket for a cohesive look; the rotor's 240 mm and 3.5 mm figures are on its own specs page.
Where can I buy the Heavy Hitter 520 Ultra Bee Super Sprocket?
Right here. We sell the Heavy Hitter 520 Ultra Bee Super Sprocket at GritShift.
