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Service bulletin I-18-06 R04

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 id10178885
Published by NHTSA2020-08-27
Manufacturer's numberI-18-06 R04
Manufacturer's date2018-08-01
NHTSA componentENGINE AND ENGINE COOLING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY

NHTSA's summary

Indian Motorcycle has determined that 111 c.i. engine connecting rods, when used in conjunction with the Thunder Stroke 116 c. i. Stage 3 Big Bore accessory pistons, may exhibit durability concerns under certain operating conditions. Motorcycles equipped with the accessory Thunder Stroke 116 c. i. Stage 3 Big Bore Kit, and utilizing aftermarket tuners/controllers, or other performance modifications are more susceptible to these durability concerns.

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

Engine, Equipment and accessories

Vehicles listed
INDIAN INDIAN

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