They started by eliminating any bits of plastic from the design

they are a reliable solution for enthusiasts looking to push their M20 engine to new limits

PFF5-4601M3 Front Control Arm Bushing Set - Not Suitable for Track Use

after tempering

Genuine BMW Secondary Oil Pump, BMW S55 CPN-3366 They started by eliminating anyBMW Part Number 11417846385. Secondary Oil Pump (also known as the Suction Pump) for the BMW S55 engine. Also compatible with M235i Racing, M240i Racing, and M2 models, which are equipped with N55 engines. Applications: 2 Series 2014 21 F22 F23 M235i Racing 2014 21 F22 F23 M240i Racing 2016 18 F87 M2 (N55) 2019+ F87 M2 Competition (S55) 3 Series 2015 18 F80 M3 4 Series 2015 21 F82 F83 M4 2015 21 F82 F83 M4 GT4 2015 21 F82 F83 M4 GTS