RAW Brokerage Raw 6 Extended Crank Collar RB20 - RB25 - RB26 - RB30 07UGV

This component remedies the issue that the Nissan Skyline engines are plagued with; short oil pump engagement. You can see that the factory crankshaft has limited oil pump engagement (~7mm). The Raw Brokerage crank collar increases the contact pitch greatly, allowing for additional insurance with the infamous RB oiling system.

This component requires the crankshaft to be removed from the engine and installed by a machine shop; which is NOT included with this purchase. Note: not all RB crankshafts require this modification. This is primarily for those crankshafts that came from the factory with a short crank collar; generally the following engines: R32 RB20, R32 RB25, R32 RB26, R33 RB25, R34 RB25, RB30E, RB30ET.