RPM 70172 Rear Axle Carrier SC10/T4/B4/B44 Black For the SC10, T4, B4 B44 Tech Notes: RPM #70172 Axle Carriers (bearings not included) are stock replacement parts for the B44 while the SC10, T4 B4 may require the use of Associated #7935 outer bearings. RPM rear axle carriers fit all versions of the vehicles listed. Serious strength and rigidity while the chemical make up of our proprietary blend of nylons provides unmatched durability Backed by RPM's world-renowned breakage warranty RPM is proud American manufacturer designing and manufacturing 100% of our molded products right here in the USA!