ACL Race STD Connecting Rod Bearing Set with 0.025m (0.001") Extra Clearance for BMW / Mini Cooper S B48A20

The unique combination of design, metallurgy, and engineering come together to deliver what drivers expect from high performance Tri-metal engine bearings.

Engineered to withstand high RPM conditions, ACL Race Series engine bearings are available for many of the popular 4, 6, and 8 cylinder applications and feature:

High strength overlay plate with reduced thickness for improved fatigue resistance.
Hardened steel backing on all conrod bearings for improved bearing lining support and retention in the housing.
Increased crush for improved bearing retention.
Elimination of flash plating on the back of the bearings to improve heat transfer and maximize the grip between the bearing and its housing.
Increased eccentricity to compensate for bore distortion at high RPM and to assist in the formation of hydrodynamic oil films.
3/4 grooved main bearings for optimum load carrying surface and oil flow to big end bearings.
Tight and consistent wall tolerances to maintain consistent clearances. Enlarged ID chamfers on bearing edges, where required, to accommodate large fillet radii on high performance crankshafts.

Technical information:

Shaft (mm): 49,975 / 49,992

Max wall (mm): 1.793

Max Length (mm): 17
Tunnel (mm): 53.6 / 53.619
Half Type: Upper & Lower

Note: Extra .001" oil clearance on standard journal.

Weight (kg): 0.2

Applications:

Make
Model
Engine
Variant

BMW
All
B48B20
All

Mini
Cooper S F54 / F55 / F56 / F57 / F60
B48B20
DOHC v16