Shop/Category/Parts catalog/RING SET T140.040 HASTING

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Also known as	6939080
Listed in parts books	Not catalogued by year yet

RING SET T140.040 HASTING

Name: Ring Set T140.040 Hasting
SKU: JRC 750R/040A

Hastings piston ring set for the T140, sized .040 over standard bore.

PN · JRC 750R/040A

Available in 7 sizes (rebore oversizes):

STD · Hastings STD · Grant STD · also fits BSA +.040 +.010 +.010 · Grant +.020 · Hepolite; also fits BSA A65 +.060 +.020 · Hastings +.020 · Grant +.020 · generic copy brand +.030 · Grant +.040 · Goetze EU/GPM Italy+.040 · Hastings+.040 · Grant +.040 · JCC/Riken Japan +.060 · GPM Italy +.060 · Hastings +.060 · Grant +.060 · generic copy brand +.080 · 78mm bore, generic Triumph fitment

This is a Hastings ring set for the T140, machined to .040 over standard bore. It's for a rebuild where the cylinder has already been bored out that extra .040 inch to clean up wear or damage, so make sure you know your actual bore size before ordering this one — it won't do you any good on a standard-bore barrel.

The alias number 6939080 refers to the same physical set, so if that's what's printed in your parts book or on your old invoice, you're in the right place.

We don't have much more detail on file for this one beyond the ring set spec itself. If you're not sure whether your engine has been bored to .040 over, give us a call before you order so we can help confirm before it ships.

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

Pin your bike to check this part fits.

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