Supersprox Motorcycle crown SPX Stealth 1489:43

The SUPERSPROX Stealth crowns last 3 times longer than an aluminum crown, without compromising performance.Better than steel! Sure, there are lightweight steel crowns, but they can't handle the torque. Better than aluminum! Try driving 20,000 miles on a Hayabusa with an aluminum crown or the entire Dakar Rally on a crown. For extreme racing, factory teams rely on SUPERSPROX Stealth crowns. Are rivets strong enough? There's no doubt that riveting is the only way to fix a crown with this kind of performance. We know how to use this technology by forging rivets into the crowns. We have never had a single rivet break since we started production. Over 6 million rivets have been used in the last 20 years. Fair technical rating.SUPERSPROX The company is one of the world's leading manufacturers of high performance pinions and crown wheels. Supplier to most European motorcycle manufacturers and factory racing teams. With extensive motorcycle expertise, SUPERSPROX has been producing the highest quality racing sprockets since 1959. 0.7800 kg