Billet Crank Sprockets from Boundary follows the same heritage as our oil pump gears, manufactured 100% in-house with US-sourced materials. These sprockets start with a chromoly steel that is ten times stronger than the OEM powdered metal, hot quenched with a low temper for the highest strength and resistance to wear.
- All sprockets heat treated to maximum hardness while maintaining toughness
- Precision CNC machined and broached for snug accurate fit
- Dimensions checked after machining and after heat treatment for guaranteed fit.
- 80% more cross-section versus OEM at the keyway
- Weighs 30% more than OEM at 170 grams vs 130 grams giving it the highest-strength sprocket on the market.
- High finish reduces friction and chain vibration
- New tooth geometry strengthens teeth and keyway
Part Number: CM-SP-11 FITS:
- ALL FORD COYOTE 2011-2014
Part Number: CM-SP-15 FITS:
- ALL FORD COYOTE 2015-UP
LARGE RADIUS (LR) FITS: Windberg, Callies, and other crankshafts with large nose radius.