The BC stroker kit for the Hyundai GK4F Theta 4 cylinder engine platform incorporates a 98mm stroke crank. Depending on bore size that you decide, the BC kit will take you up to a 2.33L with a +1mm overbore to 87mm bore size. The kit utilizes premium steel billet connecting rods in your choice of fastener (ARP2000 or Custom Age 625+ for severe-duty). As usual, each BC kit features custom CP pistons, steel alloy wrist pins, full ring pack and locks. This kit incorporates the Mitsubishi 4B11 connecting rods.
- BC 4340 steel billet crankshaft (98mm stroke).
- BC 4340 Sportsman, Pro Series or I Beam connecting rods (Mitsubishi 4B11T).
- CP or JE aluminum forged pistons (any bore size, any compression ratio).
- 5100 Series carbon steel alloy wrist pins. 9310 Series pin upgrade avail.
- Ductile iron plasma top rings, tapered second ring, low tension oil rings.
- Fully system balanced and ready to install. (50% deposit required)
- Requires Mitsubishi 4B11T rod bearings (ACL #5M1237HX), Hyundai main bearings.
2.50L - Includes 4340 billet crank, 98mm stroke, I-beam rods w/ARP2000 bolts (5.659 c-to-c), and custom pistons (choice of bore/compression). ACL Race bearings available separately.