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 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). We don't yet hold model-specific depreciation for the Triumph Trident 660; our default estimate is around 26% lost over three years.
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. The value pillar uses our default estimate for this bike, not a model-specific figure.
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
We don't yet hold model-specific depreciation for this bike. The figures above are our default estimate for machines of this kind, currently applied to 2 models in the catalogue — treat them as a starting point, not a measurement of this model. Bike residuals depend heavily on theft history, service-stamp count and crash-damage signatures. Figures assume a clean, fully-stamped example.
What it costs to own
Indicative running costs at 3,000 miles a year — the UK average from DfT travel and traffic statistics. 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
£2,834
Per year
£945
Per mile
£0.31
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 the current DESNZ pump price of £1.60/L (week commencing 03/08/2026). Electric bikes are costed from battery capacity and published range at the current domestic electricity price; where a bike has no published range we show no energy line rather than guess. 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
Related bikes
Common questions
Triumph Trident 660, answered from the data
- How much is a used Triumph Trident 660 worth?
- A 2023 Triumph Trident 660 in good condition with around 9,000 miles is worth roughly £5,900 (typical range £5,300–£6,500). Dealer asking prices sit higher than private sales, and a full service history, no crash damage and an unbroken theft record are what hold a bike at the top of its range.
- How quickly does the Triumph Trident 660 depreciate?
- We don't yet hold model-specific depreciation for the Triumph Trident 660. Our default estimate for machines of this kind is a loss of about 26% over three years, against a 25–32% norm for bikes generally — treat it as a starting point rather than a measurement of this model. Bikes hold value considerably better than cars, which typically lose 40–50% over the same period.
- Can you ride the Triumph Trident 660 on an A2 licence?
- Only if restricted. The Triumph Trident 660 is an unrestricted category A machine as sold, but it can be restricted to A2 limits. A restricted example is worth checking carefully — the paperwork matters to insurers, and a derestricted bike on an A2 licence is not road legal.
- How much does it cost to insure a Triumph Trident 660?
- Expect around £920 a year to insure a Triumph Trident 660, typically £720–£1,250. That assumes age 30, 3yrs NCB, suburban postcode. It sits in motorcycle insurance group 12 of 17. Bike premiums move far more on licence tier, rider age and postcode than car premiums do, so treat this as a starting point rather than a quote.
- What goes wrong on a used Triumph Trident 660?
- The wear and failure points we track for the Triumph Trident 660 are: stock seat (firm for touring) (any, £180 aftermarket); chain stretch (around 18-22k mi, £280); sprag clutch (early 2021) (around 25k+ mi, £400 (dealer fix)). We don't publish a reliability score for bikes — the MOT dataset behind our car scores doesn't support one at model level — so treat these as the specific things to inspect rather than a verdict. A full service history and a fresh MOT without advisories remain the best protection.
- What does a Triumph Trident 660 cost to run?
- Expect around 57 mpg, about £383 a year in fuel or energy, £310 for an annual service, £360 a pair for tyres every 6,000 miles, £280 for a chain and sprockets every 20,000 miles. Figures assume 3,000 miles a year, the UK average from DfT travel and traffic statistics, and current DESNZ pump prices. The cost-of-ownership table on the profile breaks this down per year and per mile.
- Is the Triumph Trident 660 likely to be stolen?
- The Triumph Trident 660 is a moderate theft target. Less targeted than Yamaha MT-series — Triumphs are stolen less per-unit-sold. Chain + disc lock advised in London postcodes. Theft is concentrated in E, N, SE postcode areas. A Thatcham-approved chain and ground anchor, a disc lock and a tracker are what insurers look for, and secure overnight storage moves a premium more than almost anything else.
Answers are generated from this bike's Forecourt data — curated specifications, our valuation model and the week's DESNZ fuel and energy prices — and update with the weekly data refresh.