| Also known as | GAN 27, GAN-27 |
| Listed in parts books | Not catalogued by year yet |
PISTON SET +.060 (64.5mm) T100 1939-57 - 9-1 COMPRESSION - REPLACES 70-3615 CP161 - Use CP29 for 7:1
Piston set, +.060 over (64.5mm), 9:1 compression, for the pre-unit Triumph Tiger 100 — replaces 70-3615/CP161.
This is a piston set for the pre-unit Triumph Tiger 100, sized at +.060 over standard, which works out to 64.5mm. The catalog listing places it against 9:1 compression pistons and notes it as a replacement for the older 70-3615 / CP161 numbers, so if your parts book or an old piston box shows either of those, this is the same piston set under current numbering. The listing also flags that if you're running 7:1 compression instead, you want CP29, not this one, so check what compression your engine is set up for before ordering.
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We don't have much more detail on file for this one beyond what's in the listing itself. If you're rebuilding a Tiger 100 motor and need to confirm this is the right oversize and compression for your particular engine, give us a call before you order and we'll help you sort it out.
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