2008 Triumph Rocket III Transmission and drivetrain Problems
- Complaints
- 4about this part
- Share
- 80%of 5 total for the year
- Median mileage
- 21,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the transmission and drivetrain of the 2008 Triumph Rocket III, 80% of the 5 complaints for this model year. Where a mileage was given, the median is 21,500 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“After bike sat a summer due to illness when I rode bike it started coming out of gear on acceleration and speed changes. I had shift cove replaced 2 years prior now this only has 32,000 miles”
NHTSA complaint #11190483, filed 2019-03, 30,000 miles“During acceleration bike drops between gears and you have no power it is in nuetral have to try.to shift up or down and pray you get it before someone hits you from behind. Happens most of the time when you down shift make a turn and try to accelerate. Also at freeway speeds and acceleration it happens. Very dangerous. I called a dealer he wants bike for 3 months and $4000 to repair.. Mileage is only 32000”
NHTSA complaint #11302354, filed 2020-01, 31,000 miles“The contact owns a 2008 Triumph Rocket Iii. The contact stated while driving 25 MPH upward on a hill, the motor vehicle made a loud noise. The failure recurred multiple times and there were issues with the vehicle staying in gears. The vehicle was taken to the dealer and multiple repairs were made and updates to the vehicle. However, the failure continued to occur. The manufacturer was notified of the failure. The approximate failure mileage was 13,000. Updated 4/20/15”
NHTSA complaint #10691080, filed 2015-02, 13,000 miles“The contact owns a 2008 Triumph Rocket Iii motorcycle. The contact stated that while attempting to accelerate, the transmission slipped out of gear. The vehicle was taken to the dealer where the technician diagnosed that a spring inside of the transmission fractured and needed to be replaced. The vehicle was repaired however, the failure recurred. The manufacturer was made aware of the failure. The vehicle was repaired. The failure and current mileage was 11,000.”
NHTSA complaint #10520731, filed 2013-06, 11,000 milesRelated service bulletins
- 10170558Dec 20, 2019Technical Bulletin 200 provides instructions that apply to Steering Lock and Keys, Neutral Position Adaption, Triumph Diagnostic Tool - End of Support for Microsoft Windows 7®…
- 10122011Oct 1, 2014Technical service bulletin 159 addressing 19 service instructions, some of which apply to all models. Instructions relate to piston and piston top ring, alternator rotor…
Transmission and drivetrain: other model years
Other parts of the 2008 Triumph Rocket III
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About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology