KB294040 Performance, 3-5/8" big bore piston kit. +.040"
Fits: 48-84 Big Twin with 3-5/8 big bore …
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Specifications
- Brand
- KB Performance Piston
- Part Number
- KB294040
- OEM Reference
- —
- Pack Quantity
- Sold as a set
- Category
- Pistons And Rings Kits
- VAT Rate
- 20%
About This Product
Build a powerful and quiet stroker motor with this KB Performance 3-5/8" big bore piston kit. Sold as a set in a +.040" oversize, these pistons are intended for use with 3-5/8" big bore cylinders and strokes from 4-1/4" to 4-3/4". They deliver a 10.0:1 compression ratio and are cast from T6 heat-treated 390 hypereutectic aluminum with 16% silicone. This material allows for tight clearances, ensuring your high-performance engine stays quiet and lasts. These fit 1948 to 1984 Big Twin models with big bore cylinders. Always ensure the top compression ring is gapped with the required additional clearance and verify that all components are suitable for your specific engine combination before installation.
Manufacturer part number: KB294040.
Fitment
48-84 Big Twin with 3-5/8 big bore cylinders and strokes from 4-1/4" to 4-3/4" (88" to 98" engines)
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