BC Brian Crower 2.5L Stroker Kit w/ ProH2K Rods for 4B11T Evo X (BC0139) Hawk Performance valve spring

valve spring

2015-2021 Subaru WRX 2

Redesigned in November 2024

(1) STM Three Piece Exhaust

BC Brian Crower 2.5L Stroker Kit w/ ProH2K Rods for 4B11T Evo X (BC0139) Hawk Performance valve springThis 2. 5L BC stroker kit for the Mitsubishi Evo X 4B11T engine platform incorporates a 98mm stroke crank and ProH2K rods. Depending on bore size that you decide, the BC kit will take you up to a 2. 5L with a sleeved 90mm bore. This BC rotating assembly features custom CP pistons, steel alloy wrist pins, full ring pack and locks. Vehicle Fitment: 2008 2015 Mitsubishi Lancer Evolution X (4B11T CZ4A Evo X GSR and MR models) Purchase Includes: 4340