+.020in. Dome Top Pistons with 8.3:1 Compression Ratio. Fits Big Twin 1978-1984 with 1340cc Shovel Engine.

$457.00

CAR-M5050,DS-751261,21992-80,CAR-M5045

3 in stock (can be backordered)

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Piston kit with piston rings and circlips for motorcycle engine repair.
+.020in. Dome Top Pistons with 8.3:1 Compression Ratio. Fits Big Twin 1978-1984 with 1340cc Shovel Engine.
$457.00
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What is 7+4?

Features & Benefits:-

* Bore = 3.518″

* Stroke = 4.250″

* Hypereutectic Alloy is a cast 16% silicon content material.

* Perfect for air cooled engines.

* Low thermal expansion rate = tighter piston-to-cylinder clearance.

* Complete kit includes: two pistons, rings, wrist pins and clips.

* Replaces OEM # 21992-80

Tech Tips:-

* 8.3:1 Compression Ratio with 117cc Head Chamber Volume.

* Follow Ring End Gap & Piston to Cylinder Clear ances as per the supplied Manufacturers Instructions.

* Pull the engine down first & measure the existing bore to determine if oversize pistons are required PRIOR to purchase, we do not take back piston kits. The onus is on the assembling technician to validate the cylinders & required pistons.

MFR PART No: KB297.020
REVELRY PART No: KB297.020

Additional information

Weight 1.3 kg
Dimensions 25 × 12 × 12 cm