Triumph Trident 660
Triumph's middleweight naked, built specifically to take on the MT-07. The 660cc inline-three makes 80 PS (up on MT-07's 73), the chassis is sharper than Yamaha's, and the build quality feels a class above. A2-restrictable, so newer riders can buy now and unrestrict later. The Trident's main problem is also its main strength — it's a Triumph, so you pay a premium for the badge and the experience.
- Engine
- 660 cc
- Power
- 80 PS
- Weight
- 189 kg
- Seat height
- 805 mm
- A2 licence
- Restrictable
Liquid-cooled DOHC inline-three
wet
The short version
Forecourt score
Value 61 · Insurance 31 · Theft 65
The Triumph Trident 660 holds its value about as well as most bikes (around 26% lost over three years, against the 25-32% bike norm) and is expensive to insure (group 12). Theft risk is moderate. It can be restricted for an A2 licence. The main thing to check on a used one is the sprag clutch (early 2021).
A bike-specific blend of value retention, insurance and theft risk (weighted 40/35/25). Bikes carry no MOT reliability data, so reliability isn't scored. Higher is better.
Variant: Trident 660
Engine
Petrol · 660cc
Power
80 ps
Torque
64 Nm
Weight
189 kg
Seat
805 mm
Transmission
6-speed manual
Economy
57 mpg
License
A2 restrictable
Volume Trident 660. 660cc inline-three, 80 PS, 64 Nm. 6-speed (Shift Assist optional). 189 kg wet. 805mm seat. A2-restrictable.
Tell us about the one you're looking at
Tidy and well looked-after for its age — the typical clean bike.
Estimated market value
£5,916
Range £5,324 – £6,508
HIGH CONFIDENCE
Holding value
Bikes hold value far better than cars — typical motorcycle 3-year depreciation is 25–32%, against cars' 40–50%. Some bikes (Hayabusa, Gold Wing, classic Z1000) actually appreciate in the 7–15 year zone as cult demand outstrips supply.
New
£8,295
At 5 years
£5,350
At 10 years
£3,849
Value loss by phase
Each band shows the share of original value lost during that window — not cumulative. Appreciation (green, marked +X% gained) is real for bikes that develop cult status.
UK new price by year
How we estimate this
Phase depreciation derived from observed UK used-bike pricing — classified ads, dealer asking prices, and end-of-auction figures. Bike residuals depend heavily on theft history, service-stamp count, and crash-damage signatures. The figures here are indicative for clean, fully-stamped examples.
What it costs to own
Indicative running costs at 8,000 miles a year — the UK rider average. Chain-drive bikes carry a chain/sprocket consumable line; tax (typically £25–£100/yr) and depreciation are excluded — see the section above for value retention.
3-year total
£5,945
Per year
£1,982
Per mile
£0.25
Service costs assume independent specialist labour and OE parts. Tyre intervals reflect typical UK road riding — track-day usage burns through rear tyres in <2,000 miles. Fuel uses the variant MPG at £1.45/L. Lower-mileage riders see proportionally lower totals; higher-mileage commuters pay roughly linearly more.
Estimated insurance
Group 12 of 17 (high — performance) · Comprehensive · 5 yr NCB
Indicative annual comprehensive premiums for this bike. Bike insurance is far more sensitive to licence tier and rider age than cars — pick the combination closest to your circumstances.
Licence
Age
No-claims bonus
5 yearsRisk profile
Estimated annual premium · typical, age 30-39
£920/ year
Roughly £77 per month
Typical
Suburban postcode, 3+ years NCB, standard security (Thatcham chain + disc lock), no recent claims.| Age band | Lower risk | Typical | Higher risk |
|---|---|---|---|
| Age 17-21 | £1,518 | £2,024 | £2,834 |
| Age 22-29 | £932 | £1,242 | £1,739 |
| Age 30-39Selected | £690 | £920 | £1,288 |
| Age 40-49 | £607 | £810 | £1,133 |
| Age 50+ | £552 | £736 | £1,030 |
How we estimate this
Premiums combine licence tier, rider age, no-claims bonus and a risk-profile multiplier on top of a bike-specific baseline. Bike insurance is materially more sensitive to licence tier (CBT / A1 / A2 / A) than car insurance, and young riders pay considerably more than older riders even on the same machine. Always get individual quotes before buying.
Theft risk
Bike-specific · Met Police + insurance reporting
UK bike theft rates are an order of magnitude higher than car theft. Nakeds and supersports lose more to professional gangs; large adventure bikes and tourers are statistically much safer.
Theft risk score · 1 to 4
2/4Medium risk
Medium risk
Some theft pattern, particularly in urban postcodes. Thatcham-approved chain plus disc lock recommended; secure overnight parking helps premiums.Theft hotspot postcodes
Postcode prefixes only; full London hot zone runs across E, N, NW, SE, SW, W boroughs depending on the model.
What this means for you
Less targeted than Yamaha MT-series — Triumphs are stolen less per-unit-sold. Chain + disc lock advised in London postcodes.
How we set this band
Bands derived from Met Police bike-theft reporting (most-stolen lists) cross-referenced with insurance industry underwriting data. Model + postcode are the two biggest factors in motorcycle theft risk in the UK, materially more than vehicle value.
What goes wrong
5 known issues · sorted by severity
Documented failure modes from UK owner forums, dealer service bulletins, and aggregated mechanic feedback. Mileages are approximate — different riders see different intervals depending on use and maintenance. Always address "high"-severity items before resale.
High severity
1
Medium
1
Low / cosmetic
3
| Severity | Part / issue | Cost |
|---|---|---|
| high | Sprag clutch (early 2021) 25k+ mi | £400 (dealer fix) |
| medium | Chain stretch 18-22k mi | £280 |
| low | Stock seat (firm for touring) any | £180 aftermarket |
| low | Fork seals 25k+ mi | £140 |
| low | Battery every 3 years | £90 |
How we score severity
High — strands the bike or causes consequential damage if left. Medium — service item that affects ride quality or risks failure. Low — cosmetic or minor inconvenience. Costs are independent-specialist UK rates for parts and labour together; main dealer prices typically run 30–50% higher.
Safety recalls
Manufacturers occasionally issue safety recalls to fix a fault free of charge. You can check whether the Triumph Trident 660, or your exact vehicle, has any outstanding recalls on the official DVSA service.
Check on GOV.UKOpens the Driver & Vehicle Standards Agency recall checker. Choose the make, model and year of manufacture — no registration needed.
Variant comparison
Triumph's MT-07 challenger. Cross-shop Yamaha MT-07 (cheaper, characterful twin), Honda CB650R (inline-four smoothness, £200 more), Kawasaki Z650 (cheapest of the bunch). Trident wins on build quality and triple character; loses to MT-07 on running cost.
Known issues
- Stock seat firm — touring buyers fit aftermarket (£180)
- Chain stretch ~20k mi (£280)
- Triumph dealer service costs higher than Japanese rivals
- Sprag clutch on early 2021 bikes (Triumph dealer fix)
- Otherwise reliable — modern Triumph electronics improved
Strengths
- +660cc inline-three — more power and character than MT-07's twin
- +A2-restrictable to 35kW — buy now, unrestrict at A test
- +Premium build quality — switchgear, paint, fit-and-finish above MT-07
- +Quickshifter (Triumph Shift Assist) standard on R+
- +Triumph dealer network with strong UK service support
Watch-outs
- −Premium pricing — £450 more than MT-07 like-for-like
- −Heavier servicing costs than Japanese rivals (~30%)
- −Smaller dealer network in remote UK areas vs Yamaha/Honda
- −Stock seat firm — touring buyers fit aftermarket