Performance Engine Bearings


ACL Race Bearings
ACL Race Bearings

ACL race series bearings have been synonymous with performance and race engine builds for many years.

Tri Metal design with a wide variety of applications for performance and race engines.

We carry a comprehensive range of the ACL Race series products so check with us for pricing!

Speedfactor have ACL Race Bearings in stock for:

BMW, Ford, Honda, Mazda, Mitsubishi, Nissan, Subaru, Toyota and more!

King Racing Bearings


Performance and Race engines are constantly being pushed to their limit.  A quality bearing needs to match these demands. King Bearings USA have have stepped up to the challange with the new XP Race series. .

The XP Race series is a line of bearings with advanced metallurgical and geometric technologies that meet extreme performance loads. It was developed for all performance applications that use factory, forged steel and billet aftermarket crankshafts and produce high power and torque loads for extended periods.

King Racing’s XP series features pMax Black™, a unique tri-metal structure that is 24% harder than any other conventional tri-metal race bearing.  pMax Black™ together with the XP geometric features are the ideal combination for performance racing. King Racings pMax overlay is strengthened by a proprietary nano-scaled hardening process that modifies the molecular structure and creates a black fatigue resistant shield. The outcome is a significant 24% increase in hardness and load capacity. reaching 18.1hv and maximum fatigue resistance of 10,200psi.

King race series bearings have exceptional accuracy (bulls eye tolerance) No need for multiple bearings to get the clearance. Accurate every time.


Check with us for more info and specification if required.


We are building the stock levels of these state of the art bearings.


Mains and big ends available for:

BMW M42 M44 M50 M52 M54 S50 and S54 (mains)

Ford Mazda 

Honda B F H and K series

Mitsubishi 4G63 4G93

Nissan SR20 RB25 RB26 RB30 VG30 VQ35

Subaru EJ20 EJ22 and EJ25

Toyota 4AGE 2JZ


If you don't see you engine covered, or require more technical information, please enquire