PERFORMANCE PISTON SETS FOR BIG TWIN

Manufacturer: KB PERFORMANCE PISTONS

Availability: In stock

Part #: 62427

Your price:

Weight: 2.83

Spawned from this successful manufacturer's line of automotive pistons
Lightweight permanent mold cast pistons
Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon, and heat treated to T6 specifications producing a stronger than stock piston
Special alloy compositon keeps heat confined to the combustion chamber and reduces heat transfer to the piston itself producing a cooler running piston
Can be fitted with a clearance as small as .00075"
Piston expansion is reduced by as much as 20% over conventional pistons
Less piston rock, better ring support, more durability and better retained compression for maximum power
The key feature to these pistons is the accumulator groove between the top and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings Moly rings
Wrist pins measure .792" O.D. on single cam models and .927" O.D. on Twin Cam models
See the engine section for replacement ring sets

KB Performance Pistons
Big Bore & Stroker Piston set
Fits Panhead & Shovelhead 88ci -98ci- 3.625"
8.5:1 Dome Top Piston (4.25" - 4.75" Stroke)
.030" Bore
By: KB PERFORMANCE PISTONS

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