Check out our new Signature Brass Balls Brakes made in partnership with Hawg Halters. They are now available exclusively through Darwin Motorcycles.
These are the highest quality 4 piston calipers, premium billet. Anodized and contrast cut. We also have them in polished billet. Proudly American Made.
Manufactured from 6061 billet aluminum, our front calipers are a direct bolt on for 1984 and up models except the Springer, which utilize the springer hanger. Billet aluminum has better strength to weight ratio compared to cast aluminum.
Our brakes are differential bore 4 piston calipers. Engineered from the ground up, they feature a smaller diameter piston at the lead-in of the rotor and a larger piston on the trailing side. The design causes an equalizing of the heat distribution throughout the brake pad to rotor interface which in turn provides optimum friction dynamics.
The differential bore ratio and total volumetric displacement are correctly sized to promote the best brake caliper response and brake lever feel.
The other major design advantage is the incorporation of dual piston seals. What this does is provide each piston with 2 layers of protection, a special wiper seal that prevents contamination from attacking the main pressure seal thereby promoting long term leak-proof operation.
In addition, this new sealing system improves piston pullback which reduces brake pad drag on the rotor.
