Street Twin
Before you buy
- Learner legal
- Not LAMS No. Not learner approved.
- Watch for
- No high- or medium-severity faults are listed for this bike.
- Running cost
- $8.5k–$12k used est. Sep 2026
Overview
Correcting a common assumption: the Street Twin is not, and has never been, LAMS-eligible in Australia. It shares its name and retro styling with the smaller-capacity Bonneville family, but its 900cc parallel twin is well over the 660cc capacity cap regardless of tune — confirmed against a direct read of the current NSW, QLD and VIC registers (2026-09-27), none of which lists a Street Twin row. A liquid-cooled reboot of Triumph's modern classic range, built for the retro-naked buyer rather than outright performance. The engine was updated for 2019 with 10PS more peak power at a higher rpm and revised internals; the two model-year windows are modelled as separate variants below since a 2019-2021 buyer is looking at a meaningfully different engine tune to a 2016-2018 one, not just a running change.
Engines & variants
900cc parallel twin (2016-2018)
Pros
- Torque peaks very low (3200rpm) for an easy, unintimidating ride despite the full-power classification
- Low 750mm seat height is approachable for shorter riders, unusual among full-power retro naked rivals
- Standard ABS and traction control from launch, ahead of several class rivals at the time
- British-designed retro styling with genuine heritage, not a styling exercise on a generic platform
Cons
- Not LAMS-eligible at any point — a full open licence is required regardless of the rider's experience level
- The softest-tuned version of this engine — the 2019-on update added real midrange
- Servicing and parts costs sit above the mainstream Japanese retro-naked rivals it competes against on styling
Known problems
900cc parallel twin (2019-2021, updated)
Pros
- 10PS more peak power than the 2016-2018 bike, from genuine internal updates, not just a remap
- Upgraded Brembo front brake caliper and higher-spec cartridge forks over the earlier bike
- Low 750mm seat height carried over, still approachable for shorter riders
- Standard ABS and traction control
Cons
- Not LAMS-eligible at any point — a full open licence is required regardless of the rider's experience level
- Easy to mis-buy as the same bike as a 2016-2018 example when it's a meaningfully different tune
- Servicing and parts costs sit above the mainstream Japanese retro-naked rivals it competes against on styling
Known problems
unverified marks a figure we could not confirm against a manufacturer source. It is our best reading of what is published, not a checked fact — confirm it yourself before you spend money on the strength of it.
Also worth looking at
Closest in class and capacity to the Triumph Street Twin.