| Also known as | O65 |
| Listed in parts books | Not catalogued by year yet |
RING COMPRESS 60-65MM T20
Piston ring compressor sized for 60-65mm T20 pistons, used to install rings without breaking them.
This is a piston ring compressor for the T20 model, sized to work with pistons in the 60-65mm range. It's a shop tool rather than a bike part - it clamps around the rings so you can slide the piston into the barrel without a ring catching on the bore edge and snapping.
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The catalog entry on this one is brief, and we don't have more background on it beyond the size and model callout. If you're rebuilding a T20 top end, this is the tool that keeps ring installation from turning into a fight.
The alias O65 shows up in older records for what appears to be the same tool. Give the shop a call if you want to confirm it matches your specific piston diameter before ordering.
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