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FOOTNOTES

Footnotes for Piston Kits
Please find below the footnotes for the piston kits referred to in this catalogue:

Code Description
1 Most Wiseco pistons have offset pins. Pins must be offset same as OEM for quietest operation
2 Due to a compression height that may protrude above the deck, it is recommended that a 1,00 mm thick head gasket is used
4 Utilizes extra deep valve pockets to expand the range of I-Vtec/Vanos with big/high lift cams and milled heads
6 These pistons have an oil ring groove that is lower than OE. Will not work with sleeves with access hole if the oil ring is not pinned in place
A Rings need file fitment to the bore
B Washers included
C Stroker kit for B25 stroker crank
D Weight reduction possible
E With valve pockets unlike K557M series
F FSR series(Forged Side Relief)
G Only with 2,5 Ltr conrods TECH 1:
H Based on Volvo rod 23 mm Ford OEM 21 mm
I Tuff Skirt Coating JE Pistons
J Mini Tritec engine
K Compression ratio depends on Cylinder head used
L Pin 20 mm - OEM = 20,65 mm (13/16)
M Made to order(4 pcs minimum) PART NUMBER
N Aluminum cylinders like Alusil®, Lokasil®, Silitec®, DiASil, Mercosil, ALBOND®, FRM, MMC, recommended to run sleeved bores/must sleeve block or
Nicasil
O VR6 cylinder sets from stock, can be used
P Piston guided rod, washers required
Q Q Oil squirter modification or removal required or use adequate spacers, please make sure to check rod to oil squirter clearance when relocating oil
squirter
R Full Round Skirt with or without full milled side relief SPECIFICATIONS
S Asymmetrical FSR series
T Accepts Turbo and Nitrous
U Head is the other way around on the Eclipse vs the later EVO’s
V Accepts Nitrous and E8
W C/R calculated with OE head gasket
X C/R calculated with 1,00mm head gasket
Y 3D Undercrown milling included
Z Alusil® suited
PS Perfect Skirt Coating JE Pistons
UL Ultra Series (Lateral Gas Ports, Accumulator Grooves, Skirt Coating, Ceramic Crown Coating, Upgraded Pins)

REMARKS

Remarks for Piston Kits

* Pistons listed with a compression ratio range: low number is with un-cut deck, high number is block decked to 0,76 mm piston to
cylinder head clearance.
* Always run at least 0,76 mm piston to head clearance including gasket thickness.
* Compression height measured from pin bore center.
* If piston appears to be different than expected, please do not hesitate to call Race Winning Brands Europe B.V. at +31(0)252 687713
to verify compatibility.
* Always check the following clearances:
- Pistons dome to head and spark plug
- Piston to valve
- Crank counterweight to piston
- Connecting rod to piston
- Piston to oil squirter

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