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- 3/8"-16 UNC (One End)
- 3/8"-24 UNF (Other End)
- 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 â€“ Whatever it takes to keep your V-Twin bike on the road!