Kawasaki Mule 2510 4x4 & Bayou 300 4x4 U Joint/Spider Cross Bearing - Replaces OEM 49050-1055 Built to Kawasaki OEM Standards Replaces OEM # 49050-1055 Free Standard USPS Shipping Dimensions: Width cap - 16mm / Width cap to cap - 41mm / Width groove to groove - 26mm