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- DME Twin Cam Set
- Black wrinkle cylinder heads DME port and polish, with optimized port and combustion chambers black melonite
- 1.900" intake valves & 1.615 exhaust valves
- Custom spring kit with Titanium top collars. cast iron guides with seal
- Designed to fit, engineered to last. Rivera Primo performance and aftermarket parts for Harley-Davidson motorcycles
- Rivera Primo - American made pro clutches, belt drives and other custom parts for V-Twin motorcycles – Whatever it takes to keep your V-Twin bike on the road!