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Forged high compression Wiseco piston kit. 9.5:1 compression ration (stock is around 8:1). Includes wrist pins, circlips and Hastings rings.

Note: These Wiseco pistons will fit stock style Hastings rings with 1.2mm (0.047") top & middle ringlands and a 4.75mm oil ring.

Wiseco, 1340cc Shovel piston kit. +.010"

#913008

Stock:Yes

Forged low compression Wiseco piston kit. 7:1 compression ration (stock is around 8:1) for improved reliability. Includes wrist pins, circlips and Hastings rings.

Note: These Wiseco pistons will fit stock style Hastings rings with 1.2mm (0.047") top & middle ringlands and a 4.75mm oil ring.

Wiseco, 1340cc Shovel low compression piston kit. +.040"

#912604

Stock:Yes

Will fit Stock and 101HP Thunderstorm heads.

Wiseco, gasket kit

#912702

Stock:Yes

Forged high compression Wiseco piston kit. 9.5:1 compression ration (stock is around 8:1). Includes wrist pins, circlips and Hastings rings.

Note: These Wiseco pistons will fit stock style Hastings rings with 1.2mm (0.047") top & middle ringlands and a 4.75mm oil ring.

Wiseco, 1340cc Shovel piston kit. +.040"

#913011

Stock:Yes

Forged low compression Wiseco piston kit. 7:1 compression ration (stock is around 8:1) for improved reliability. Includes wrist pins, circlips and Hastings rings.

Note: These Wiseco pistons will fit stock style Hastings rings with 1.2mm (0.047") top & middle ringlands and a 4.75mm oil ring.

Wiseco, 1340cc Shovel low compression piston kit. +.010"

#912601

Stock:Yes

High 10.5:1 compression ratio with forged domed pistons. Includes Hastings rings, wrist pins and circlips.

Wiseco, 04-up XL1200/Buell 10.5:1 piston kit. +.020"

#912673

Stock:Yes

Stock replacement forged piston kit. Stock 8.5:1 compression ratio. Complete with Hastings rings, circlips and wrist pins.

Note: Will also fit Evo B.T. models equipped with Screamin' Eagle cylinders heads, which will give a higher 9.5:1 compression ratio.

Wiseco, 1340 Evo B.T. piston kit. +.040"

#912638

Stock:Yes

Forged low compression Wiseco piston kit. 7:1 compression ration (stock is around 8:1) for improved reliability. Includes wrist pins, circlips and Hastings rings.

Note: These Wiseco pistons will fit stock style Hastings rings with 1.2mm (0.047") top & middle ringlands and a 4.75mm oil ring.

Wiseco, 1340cc Shovel low compression piston kit. +.030"

#912603

Stock:Yes

88" to 107" big bore conversion piston set. Incl. forged 10.5:1 CR domed 4-1/8" bore pistons, Hastings rings, circlips, wrist pins. Requires 4-1/8" big bore cylinders and case boring. Works with stock 4" stroke flywheels of 88" models.

Note: Does not include any gaskets.
Note: Oversizes are not available.

Wiseco, 88" to 107" Twin Cam 'Sleeper' piston kit. STD

#912693

Stock:Yes

Forged aluminum. Domed 10:1 high compression piston kits include wrist pins, circlips and Hastings rings. Compatible with OEM heads.
Note: Pistons will fit stock style Hastings rings with 1.6mm (0.062") top & middle ringlands and 4.0mm oil rings.

Wiseco, 1340 Evo B.T. high compression piston kit. +.005"

#913012

Stock:Yes

Forged high compression Wiseco piston kit. 9.5:1 compression ration (stock is around 8:1). Includes wrist pins, circlips and Hastings rings.

Note: These Wiseco pistons will fit stock style Hastings rings with 1.2mm (0.047") top & middle ringlands and a 4.75mm oil ring.

Wiseco, 1340cc Shovel piston kit. STD

#913007

Stock:Yes

10:1 compression ratio. Will fit with stock and 101HP Thunderstorm heads. Incl. forged pistons, Hastings rings, wristpins and circlips.

Note: See 912702 for the required gasket kit.

Wiseco, 96-02 Buell S series piston kit. STD

#912669

Stock:No

96-103" big bore conversion kit. 10.5:1 compression ratio. Converts the stock 96" Twin Cam to 103" with stock heads. Stock cylinders must be bored from 3 3/4" (3.750") to 3-7/8" (3.875") to accept the 103" big bore pistons. Comes with reversed dome forged pistons, Hasting rings, circlips and wrist pins.

Wiseco, 96" to 103" Twin Cam big bore piston kit. +.010"

#912683

Stock:No

High 10.5:1 compression ratio ratio with forged flat top pistons. No cylinder head modifications required. Includes Hastings rings, circlips and wrist pins.

Wiseco, XL1200 high compression piston kit. +.030"

#912625

Stock:Yes

High 10.5:1 compression ratio ratio with forged flat top pistons. No cylinder head modifications required. Includes Hastings rings, circlips and wrist pins.

Wiseco, XL1200 high compression piston kit. +.010"

#912623

Stock:Yes

High 10.5:1 compression ratio ratio with forged flat top pistons. No cylinder head modifications required. Includes Hastings rings, circlips and wrist pins.

Wiseco, XL1200 high compression piston kit. +.020"

#912624

Stock:Yes

Forged high compression Wiseco piston kit. 9.5:1 compression ration (stock is around 8:1). Includes wrist pins, circlips and Hastings rings.

Note: These Wiseco pistons will fit stock style Hastings rings with 1.2mm (0.047") top & middle ringlands and a 4.75mm oil ring.

Wiseco, 1340cc Shovel piston kit. +.020"

#913009

Stock:Yes

High 10.5:1 compression ratio with forged domed pistons. Includes Hastings rings, wrist pins and circlips.

Wiseco, 04-up XL1200/Buell 10.5:1 piston kit. STD

#912671

Stock:Yes

9.5:1 compression. Converts your XL883 or XL1100 Sportster, re-using your stock cylinders, on 86-03 XL only, to 1200cc. Complete with reversed dome forged pistons, rings, wrist pins and circlips. Will install without modification to cylinder head. Piston weight approximately the same as stock, rebalancing is not necessary. Compression around 9.5:1. Tests have shown a 26% power increase on 883 models.
Note: For 04-up XL models 1200cc cylinders must be used. The stock 04-up 883 cylinder liners are too thin for boring to 1200 size.

Wiseco, 883 to 1200 XL conversion piston kit. +.030"

#510676

Stock:Yes

Standard 9:1 compression ratio ratio with forged flat top pistons. Includes Hastings rings, circlips and wrist pins.

Wiseco, XL1200 piston kit. STD

#912617

Stock:Yes