| Also known as | E9488 |
| Diagram | Fig. 1 — CRANKSHAFT AND CONNECTING RODS · ref 13 |
| Subsystem | engine bottom |
| Listed in parts books | 1970–1971 |
Piston Complete 9:1 C.R
A complete 9:1 compression piston for the Triumph twin, cataloged 1970-1971, also known under the older E9488 number.
70-9488 is a complete piston, listed in the catalog at a 9:1 compression ratio and cataloged under the CRANKSHAFT AND CONNECTING RODS section. The earlier form of this part number shows up as E9488 in older parts books, so if you're working from a pre-1970 reference and see that stamp, it's the same physical component.
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This one appears in our records for the 1970-1971 span, which lines up with the engine builds Triumph was running through that period. As with any piston work, bore condition and ring selection matter as much as the part number itself, so check your cylinder before ordering a full set.
Give us a call if you want to confirm which bore size and ring package you need to go with it before you order.
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