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NK55 KSF

2005 Better Bt 125-20

Red Petrol 125cc
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MOT Status

Valid
Expires5 Nov 2026
Tests6 (4 pass, 2 fail)
Pass rate66.7%

Mileage

7,668 mi
Last recorded7,668 miles
Recorded on6 Nov 2025
Typical for 2005 Better Bt 125-204,939 mi

Significantly above average — investigate

4 checks still locked for this Better
Stolen
Finance
Write-off
Keepers
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Vehicle Details

RegistrationNK55 KSF
MakeBetter
ModelBt 125-20
Year2005
ColourRed
Fuel typePetrol
Engine125cc

All premium checks include

50+ data points
Finance Check (Experian) Insurance Write-off Salvage Auction Stolen Check Previous Owners Ex-Taxi, Police, NHS Mileage Anomaly Import / Export Scrapped Check Plate Changes

MOT History

4 pass 2 fail
Pass 6 Nov 2025 7,668 miles

BOTH TYRES OLD/ HAS MINOR AGE CRACKS - NO CORDS/CANVAS ETC SHOWING

Drive chain slightly loose (6.1.7 (c) (i))

Drive chain worn but not considered excessive (6.1.7 (c) (i))

FRONT FORK STANCHIONS SLIGHTLY PITTED

GEAR LEVER LOOSE/HAS PLAY

GENERAL MINOR CORROSION

Nearside Exhaust slightly loose RUBBER BUSHING WORN (6.1.2 (a))

Nearside Front Footrest slightly loose RUBBER BUSHING WORN (6.2.12 (a))

OFFSIDE MIRROR MISSING

OFFSIDE REAR INDICATOR SECURED WITH TAPE

Offside Exhaust slightly loose RUBBER BUSHING WORN (6.1.2 (a))

Riders seat slightly loose (6.2.5 (a) (ii))

Fail 5 Nov 2025 7,668 miles

Front Brake excessively binding (1.2.1 (f))

Front Brake hose excessively deteriorated (1.1.12 (b) (ii))

Front Brake hose damaged and likely to fail (1.1.12 (a)) DANGEROUS

BOTH TYRES OLD/ HAS MINOR AGE CRACKS - NO CORDS/CANVAS ETC SHOWING

Drive chain slightly loose (6.1.7 (c) (i))

Drive chain worn but not considered excessive (6.1.7 (c) (i))

FRONT FORK STANCHIONS SLIGHTLY PITTED

GEAR LEVER LOOSE/HAS PLAY

GENERAL MINOR CORROSION

Nearside Exhaust slightly loose RUBBER BUSHING WORN (6.1.2 (a))

Nearside Front Footrest slightly loose RUBBER BUSHING WORN (6.2.12 (a))

OFFSIDE MIRROR MISSING

OFFSIDE REAR INDICATOR SECURED WITH TAPE

Offside Exhaust slightly loose RUBBER BUSHING WORN (6.1.2 (a))

Riders seat slightly loose (6.2.5 (a) (ii))

Pass 11 Jul 2017 7,619 miles
Pass 28 Jun 2016 7,007 miles
Pass 25 Jun 2015 6,184 miles

Front Tyre worn close to the legal limit (4.1.3(ii))

Rear Exhaust is leaking but is not excessively noisey (7.1.1b)

Rear Exhaust slightly deteriorated (7.1.1a)

Fail 18 Jun 2015 6,168 miles

Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock (2.1.4)

Front position lamp does not illuminate immediately when switched on (1.1.3a)

Horn not working (1.7.3a)

Front Tyre worn close to the legal limit (4.1.3(ii))

Rear Exhaust is leaking but is not excessively noisey (7.1.1b)

Rear Exhaust slightly deteriorated (7.1.1a)

How Reliable is the Better Bt 125-20?

Based on 1,290 MOT tests across 286 vehicles.

67.8%
Pass Rate
688
Miles/Year
21
Year Lifespan
286
On UK Roads

Top MOT Failure Points

Stop lamp does not illuminate immediately a brake applies 53
Tyre tread depth is below minimum requirements of 1.0mm 42
Footrest missing 36
shock absorber seal failed and leaking oil 34
reflector on motorcycle missing 30
Full Better Bt 125-20 reliability report

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NK55 KSF is a 2005 Better Bt 125-20 in Red with a 125cc petrol engine. This vehicle has been through 6 MOT tests with a personal pass rate of 66.7%.

Across all 2005 Better Bt 125-20 models, the average MOT pass rate is 69.8% with a typical mileage of 4,939 miles. This particular vehicle has a lower pass rate than the average for its year, which may indicate maintenance issues worth investigating.

The most common reason a Better Bt 125-20 fails its MOT is stop lamp does not illuminate immediately a brake applies, accounting for 53 recorded failures. If you're considering buying NK55 KSF, it's worth having these areas checked by a mechanic before committing.

The Better Bt 125-20 typically stays on UK roads for around 21 years. At 21 years old, this Better Bt 125-20 is approaching the upper end of the typical lifespan for this model.

Frequently Asked Questions

How do I check the history of NK55 KSF?

You can check the full history of NK55 KSF by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was NK55 KSF registered?

NK55 KSF is a 2005 Better Bt 125-20, first registered on 5 October 2005.

Is NK55 KSF safe to buy?

The MOT history for NK55 KSF shows 6 tests with a 66.7% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does NK55 KSF have outstanding finance?

Finance checks require a premium vehicle report. This checks against all major UK finance providers to see if there is any outstanding finance on NK55 KSF. If you buy a car with outstanding finance, the finance company can repossess it.

No warranty or guarantee of accuracy is provided for any free data on this page. The data guarantee applies only to information obtained through the purchase of a full check.