SpeedFactory Racing B20 Type R Race Spec High Compression Piston Kit
Upgrade your all motor engine build with the SpeedFactory Racing B20 Type R Race Spec High Compression Piston Kit, engineered to deliver superior performance and reliability for your high compression all motor build.
These pistons utilize AC9B hypereutectic aluminum alloy for greater strength plus scuff and seizure resistance with improved groove wear and durability. The top land has been enlarged for more strength and resistance to breakage. They also allow tighter piston-to-wall clearances for reduced piston rocking resulting in better ring seal and more power all while being lightweight.
Compatible with OEM rods as well as aftermarket forged rods and include Moly skirt coating that helps minimize friction preventing scuffing and wear, providing increased piston life & efficiency.
SFR B20 Type R Race Spec High Comp Piston Kit – Includes x4 pistons, wrist pins, premium ring sets, and wrist pin clips
Available Bore Sizes:
84.0mm (308g), 84.5mm, and 85.0mm
Fitments:
B20B/Z and sleeved 84+mm B16A, B18A/B, B18C engines
Approximate Compression Ratios at 84.0mm Bore:
B16A Block and Head - 10.6:1
B18C Block/Crank/Rods with PR3 Head - 10.3:1
B18C Block/Crank/Rods with P72 Head - 10.6:1
B18C Block, B18A/B or B20B/Z Crank/Rods with PR3 Head - 11.6:1
B18C Block, B18A/B or B20B/Z Crank/Rods with P72 Head - 11.8:1
B18A/B or B20B/Z Block and Head - 11.7:1
B18A/B or B20B/Z Block with PR3 Head - 12.3:1
B18A/B or B20B/Z Block with P72 Head - 12.6:1
Add 0.13 for each 0.50mm increase in bore size. Actual compression will vary with material removal during machining processes and head gasket thickness.
Features:
- CNC machined crowns
- Strong hypereutectic AC9B alloy - much stronger than OEM pistons
- 21mm floating wristpins
- Compatible with both OEM rods (do not use wrist pin clips) and aftermarket connecting rods (use wrist pin clips)
- Highly resistant to heat
- MoS2 skirt coating with measurement window
- Premium 1.0*1.2*2.8 Gas Nitrided Performance Ring Set, ideal for high performance and longevity
- Sets are weight matched to +/- 1 gram
Note: Piston to wall clearance is calculated before the coating is applied. Use the bore diameter of the piston kit and install the pistons to this bore size. If using limited nitrous or boost, add .0005” wall clearance.