Compression Estimates:
B16A Block and Head 8.58:1
B18A/B Block and Head 9.23:1
B18C1 Block and Head 9.32:1
B18C1 Block and B18c5/B16A Head 9.48:1
B18A/B Block with B18C1 Head 8.74:1
THIS KIT INCLUDES:
Skunk2 Alpha Series Connecting Rods
Nippon Racing Performance Turbo B-Series Pistons with pins and clips
NPR or Hastings Performance Rings
**81.5mm Available for Pre-Order, Expected to Ship January 2025**
Fits:
Honda B16A B16B B16A2, B17A, B18A/B, B18C
GS-R and B18C5 Type R Engines
Nippon Racing has redesigned these pistons to share the alloy of the far superior Mitsubishi OEM Turbo castings.
These pistons have the Deck and the Ring lands Fully coated with a Knock Resistant Coating.
The skirts have been Polished to a dull surface finish to Eliminate potential hot spots and further aid in heat transfer to the cylinder walls.
These pistons have been tested to support over 450 WHP with the proper tuning and supporting mods.
Dome displacement has been matched to within .005 CC .
This results in near identical cylinder compression, yielding more horsepower and better efficiency.
Skunk2 Alpha Series Rods feature an H-Beam design that is precision CNC machined from high-strength aircraft-grade 4340 alloy steel forgings that are then heat treated, tempered, and shot peen stress relieved. Skunk2 Alpha rods come with bronze wrist pin bushings and feature forced pin oiling. Each rod incorporates ARP2000 fasteners rated at over 220,000psi and can handle between 175hp to 200hp per cylinder on average.
Rod Features:
Forged 4340 Alloy Steel
Bronze Wrist Pin Bushings
Forced Pin Oiling
Shot Peen Stress Relieved
Balanced to within +/- 1 gram
3/8-Inch ARP2000 Rod Bolts Included
Note Compression Estimate is for 81mm. For oversized or applications not listed, please use a compression calculator (choose PR4 as the piston type).
