Shop/Category/Parts catalog/Triumph 750 Twin Piston Set 7.4:1 +.040

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Also known as	71-7086/040
Listed in parts books	Not catalogued by year yet

Triumph 750 Twin Piston Set 7.4:1 +.040

Name: Triumph 750 Twin Piston Set 7.4:1 +.040
SKU: JRC 750/040L

A .040 oversize piston set for the Triumph 750 twin, machined to 7.4:1 compression.

PN · JRC 750/040L

Available in 5 sizes (rebore oversizes):

STD · 7.5:1 compression, kit form STD · JCC brand, 76mm bore +.020 +.020 · 7.4:1 compression +.020 · JCC brand, 76mm bore +.040+.040 · 7.4:1 compression+.040 · JCC brand +.060 +.060 · 10:1 compression +.060 · 7.4:1 compression +.060 · JCC brand, T140/TR7 +.080 · JCC brand

This is a piston set for the Triumph 750 twin, machined to a 7.4:1 compression ratio and bored .040 over standard. It's sold under JRC 750/040L, with 71-7086/040 as the equivalent alternate part number for the same set.

The .040 oversize is meant for a cylinder that's already been bored out that far, whether from a rebuild or wear correction. The 7.4:1 compression ratio is a factory-style ratio rather than a high-compression piece, so it's a straightforward replacement set rather than a performance swap.

We don't have more detail on this one beyond what's in the description, so give us a call to confirm bore size and cylinder specs on your engine before you order — getting oversize pistons wrong means a trip back to the machine shop.

BackorderAdd it to your cart — we'll source it and confirm the price before you pay.

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