Product Description Replaces OEM 65201-37 Used on all 74 and 80 cu. in. side valves 1937-48 and 1936-40 Knuckles V-Twin Manufacturing UL Muffler at J&P Cycles Browse all J&P Cycles deals $146.99 Out of Stock Price verified 2d ago Buy Now at J&P Cycles Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand V-Twin Manufacturing Color Chrome Size OS Condition New MPN 30-0166 V-Twin Manufacturing