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WISECO HIGH-COMPRESSION PISTON KITS FOR EVOLUTION SPORTSTERS AND BIG TWIN

WISECO HIGH-COMPRESSION PISTON KITS FOR EVOLUTION SPORTSTERS AND BIG TWIN

WISECO 3 3/4" BIG BORE PISTON KITS FOR EVOLUTION BIG TWIN

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WISECO FORGED PISTON KITS FOR 2004-2022 SPORTSTER XL1200

WISECO FORGED PISTON KITS FOR 2004-2022 SPORTSTER XL1200

These piston kits will convert your 1340 Evolution Big Twin motor to a 93.4 cubic inches (1530 CC) Big Bore with stock stroke. Must be used in combination with a set of 3.740" bore cylinders. No cylinder head modification or re-balancing of the crankshaft required, just have your crankcase bored to the spigot size of these big bore cylinders. Compression ratio is 9.5 to 1 when using the stock Harley cylinder heads. Kit includes a pair of Wiseco forged pistons, Hastings piston rings, wrist pins and piston pin clips. Top end gasket kit for your year motorcycle must be ordered separately.

Note:
These kits are designed for use with 1984 thru 1989 and 1996 thru 1999 stock crankcases or any S&S, Delkron or S.T.D. crankcase. Due to a weaker construction of the stock 1990 thru 1995 crankcases the use of these is not recommended they should be replaced with S&S, Delkron or S.T.D. crankcases.


Specifications

Piston kits
Article number Description Retail price Add to cart
238805
3.740" Big Bore piston kit for stock stroke € 407,95
Top end gasket kits
Article number Description Retail price Add to cart
700030
Fits 3.740" Big Bore 1992 thru 1999 Evolution Big Twin € 184,59
Replacement piston ring set (for one piston)
Article number Description Retail price Add to cart
238813
3.740" Std. size € 45,16
Piston dome specification
All valve pocket specification are measured from deck height
Dome Volume Intake Pocket Exhaust Pocket
Depth Diameter Depth Diameter
-2 CC -.189" 2.000" -.189" 2.000"

Recommended Retail Prices include 21.00% sales tax.

Prices exclude shipping, import duties and installation.