Triumph is recalling a number of its models for faulty engine control units (ECUs), which may improperly activate the bikes’ fuel injectors.

The recall affects the 2014 and 2015 model year Triumph Thunderbird, Thunderbird ABS, Tiger 800,Tiger 800 ABS, Thruxton, and Bonneville motorcycles manufactured between February 6, 2014 and August 7, 2014.

It’s not clear how many total motorcycles this recall affects, as Triumph lists the number currently as “0” with NHTSA, but given the number of models involved and the wide timeframe given on the production dates, we would expect a massive number of motorcycles to be involved.

According to Triumph, the affected ECU’s improperly signal the activation of the bikes’ fuel injectors. This can cause a loss of power on affected machines, which could induce a crash.

Triumph will notify owners, and dealers will modify the internal ECU hardware, free of charge. This recall has already begun on November 6, 2014.

Concerned owners may contact Triumph customer service at 1-678-854-2010 (Triumph’s number for this recall is SB519). As always, the NHTSA is also available at 1-888-327-4236 and safercar.gov.

All Affected Triumph Models for This Recall:

2014-2015 TRIUMPH AMERICA

2014-2015 TRIUMPH BONNEVILLE

2014-2015 TRIUMPH BONNEVILLE T100

2014-2015 TRIUMPH ROCKET III ROADSTER

2014-2015 TRIUMPH ROCKET III TOURING

2014-2015 TRIUMPH ROCKET III TOURING ABS

2014-2015 TRIUMPH SCRAMBLER

2014-2015 TRIUMPH SPEEDMASTER

2014-2015 TRIUMPH THRUXTON

2014-2015 TRIUMPH THUNDERBIRD

2014-2015 TRIUMPH THUNDERBIRD ABS

2014-2015 TRIUMPH THUNDERBIRD STORM

2014-2015 TRIUMPH TIGER 800

2014-2015 TRIUMPH TIGER 800 ABS

Source: NHTSA