**87mm Currently Available for Pre-Order, Ships February 2024**
Nippon Racing High Compression H-Series Pistons (FRM Sleeve Compatible)
THESE PISTONS WILL FIT HONDA PRELUDE H22A H22A4 AND H23 MOTORS.
THESE PISTONS WILL ALSO FIT F22 VTEC AND NON VTEC MOTORS IF YOU OVER BORE THE MOTOR TO 87.25mm.
THESE WILL FIT JDM AND USDM MOTORS.
THESE PISTONS COME WITH PINS,RINGS AND 8 PINS LOCKS.
THE PISTON RINGS ARE NPR GAS NITRITE N-51 TREATED PERFORMANCE RINGS.**
THESE PISTONS ARE DESIGNED ONLY FOR NA APPLICATIONS AS THEY WILL SIGNIFICANTLY RAISE YOUR COMPRESSION.
THE COMPRESSION RATIO IS APPROX 11:1 .
THESE PISTONS ARE MADE TO FIT EITHER STOCK RODS OR CUSTOM FORGED RODS.
THESE PISTONS COME WITH FULL FLOATING 9310 CASE HARDENED PINS.
THESE PISTONS HAVE MANY IMPROVEMENTS OVER THE OEM HONDA UNITS.
THESE PISTONS HAVE TEFLON IMPREGENATED SKIRTS TO REDUCE FRICTION, THEREBY INCREASING HP AND GAS MILEAGE.
THESE PISTONS COME WITH A FULLY ANODIZED DECK, THIS INCREASES THE HEAT LOAD THESE PISTONS CAN HANDLE, THEREBY ALLOWING FOR SAFE USE OF NITROUS.
THESE PISTONS/PIN SETS HAVE BEEN BALANCED TO WITHIN 3 GRAMS OF EACH OTHER, SO YOU DO NOT HAVE TO PAY THE MACHINE SHOP FOR ADDITIONAL BALANCING.
THE DOME SPEC ON THESE PISTONS IS ACCURATE TO WITHIN 0.1CC OF EACH OTHER MAKING THE COMPRESSION IN EACH CYLINDER IDENTICAL FOR BALANCED POWER.
THESE ARE THE BEST PISTONS YOU CAN BUY FOR YOUR PRELUDE/ACCORD IF YOU ARE MAKING A MONSTER ALL MOTOR HONDA.
THESE PISTONS COME WITH AN EXTRA LUBRICATION SLOT ON THE WRIST PIN FOR PIN LUBRICATION THAT IS FAR SUPERIOR TO THE LESS EXPENSIVE MADE IN TAIWAN UNITS.
THIS IS DONE TO PREVENT PIN DAMAGE UNDER EXTREME PRESSURE.
Generally Ships in 1-3 Business Days
**Rings may be substituted for GNH or Hastings depending on availability
