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Service bulletin COM3 - 32748

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11026940
Published by NHTSA2026-01-05
Manufacturer's numberCOM3 - 32748
Manufacturer's date2025-12-09
NHTSA componentPOWER TRAIN

NHTSA's summary

Dealer notice announcing the availability of Service Bulletin 638.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Vehicles listed
TRIUMPH SCRAMBLER 400 X2024, 2025
TRIUMPH SPEED 4002024, 2025

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
SB6382026-01-05. Service bulletin. Service Bulletin 638 advises dealers to measure and replace the camshaft drive chain tensioner.