Product Description Barnett Clutch Spring For Harley Big Twin / Sportster Features This replacement diaphragm clutch spring is 20 stronger than stock Heavy-duty Replaces OEM 37871-90 Made in the USA Barnett Clutch Spring For Harley Big Twin / Sportster 1990-2022 at RevZilla Browse all RevZilla deals $44.95 In Stock at RevZilla Price verified 3d ago Buy Now at RevZilla Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand Barnett Size OS Condition New MPN 502-00-01077/5020001077 Barnett