dbr derbi superfast low titanium 70 85ccThe DBR Superfast Low Titanium 70 85cc expansion for Derbi engines represents an extreme solution designed for the world of high displacement competitions. Made entirely from Japanese Titanium, this handcrafted exhaust guarantees reduced weight and optimized gas expansion capacity for Big Bore configurations beyond 70 85cc. The low mount design is engineered to maximize performance on very high performance engines, improving top end power and the