| Also known as | E3967 |
| Diagram | Fig. 15 — TWINSEAT, REAR PANELS AND EXHAUST SYSTEM · ref 32 |
| Subsystem | exhaust |
| Listed in parts books | 1964 |
EXTENSION PIPE T20 CUB
Exhaust extension pipe for the Triumph T20 Cub, PN 70-3967 (alias E3967).
This is an extension pipe for the T20 Cub, the small Triumph single, listed in the parts book under the exhaust system section alongside the twinseat and rear panels. The catalog carries it as part number 70-3967, with E3967 as the older-style alias for the same piece.
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An extension pipe like this extends the run of the exhaust system, connecting sections to route gases back toward the rear of the machine. Our record on this one is brief - a single catalog listing tied to the T20 Cub - so beyond that we don't have more detail on file.
If you're trying to match this against what's currently on your bike, give the shop a call and we'll help confirm it's the right piece before you order.
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