Trail & family

Yamaha TT-R125LE 2027

Trail & family, 124cc 4T, US version

Partly verified

From the owner’s manual: engine oil capacity 1.00 L (1.06 US qt), p. 9-1; front tire 70/100-19 42M, p. 9-1; rear tire 90/100-16 52M, p. 9-1. Checked 16 Oct 2026.

Model year on file: 2027 only. Other years are added as their manuals are read.

No CPSC recall found for the 2027 Yamaha TT-R125LE, checked 2026-10-15. Recalls

Yamaha TT-R125LE 2027

Workshop card from motoxsports.com/bikes/yamaha-tt-r125le/ · each figure as the maker’s document prints it, with its source number; ≈ marks a figure we converted. Torque values are not published: use the manual.

Wheels and tires

2 of 4 filled

Front rim: Not yet verified
Rear rim: Not yet verified
Front tire: 70/100-19 42M; Verified, read off the manual page: Manual p. 9-1 · checked 2026-10-11 source [1]
Rear tire: 90/100-16 52M; Verified, read off the manual page: Manual p. 9-1 · checked 2026-10-11 source [1]

Suspension

3 of 7 filled

Fork: Telescopic fork; Verified, read off the manual page: Manual p. 9-2 · checked 2026-10-11 source [1]
Fork travel: 7.1-in (≈ 180 mm, converted by MotoXSports); Research level: Spec sheet (research) · converted from 7.1-in · checked 2026-10-11 source [2]
Shock travel: 6.6-in (≈ 168 mm, converted by MotoXSports); Research level: Spec sheet (research) · converted from 6.6-in · checked 2026-10-11 source [2]
Stock fork spring rate: Not yet verified
Stock shock spring rate: Not yet verified
Static sag, bike only: Not yet verified
Race sag, rider on: Not yet verified

Fluids and capacities

3 of 3 filled

Engine oil spec: SAE 10W-40; API service SG type or higher, JASO standard MA; Verified, read off the manual page: Manual p. 9-1 · checked 2026-10-11 source [1]
Engine oil capacity (oil change): 1.00 L (1.06 US qt); Verified, read off the manual page: Manual p. 9-1 · checked 2026-10-11 source [1]
Fuel capacity: 6.0 L (1.6 US gal); Verified, read off the manual page: Manual p. 9-1 · checked 2026-10-11 source [1]

Service specs

2 of 5 filled

Fork oil: Not yet verified
Brake fluid: DOT 4; Verified, read off the manual page: Manual p. 7-21 · checked 2026-10-16 source [1]
Fuel octane: Not yet verified
Idle speed: 1300–1500 r/min; Verified, read off the manual page: Manual p. 7-14 · checked 2026-10-16 source [1]
Valve clearance: Not yet verified

Maintenance

3 of 3 filled

Tire pressure (off-road): 100 kPa (1.00 kgf/cm², 15 psi) front and rear; Verified, read off the manual page: Manual p. 7-16 · checked 2026-10-11 source [1]
Chain slack: 35.0–50.0 mm (1.38–1.97 in); Verified, read off the manual page: Manual p. 7-23 · checked 2026-10-11 source [1]
Spark plug and gap: Niterra do Brasil Ltda./CR7HSA; Verified, read off the manual page: Manual p. 7-8 · checked 2026-10-11 source [1]

Dimensions

3 of 3 filled

Seat height: 805 mm (31.7 in); Verified, read off the manual page: Manual p. 9-1 · checked 2026-10-11 source [1]
Wheelbase: 1270 mm (50.0 in); Verified, read off the manual page: Manual p. 9-1 · checked 2026-10-11 source [1]
Weight (curb weight): 90 kg (198 lb); Verified, read off the manual page: Manual p. 9-1 · checked 2026-10-11 source [1]

Gearing

0 of 5 filled

Stock front sprocket, stock rear sprocket, chain pitch, stock chain links, stock final drive ratio: Not yet verified

Solid marks are owner's-manual pages; hollow marks are manufacturer web or spec-sheet figures still waiting on a manual page. Last reviewed 2026-10-16. Rows marked not yet verified are blank on purpose.

Buying parts

The stock sizes and specs this bike left the factory with, each with its source. Take them to any shop.

Retailer links below are affiliate links: we may earn a commission, at no cost to you, and it never changes the specs. Affiliate disclosure.

Tires: Front tire 70/100-19 42M Owner's manual p. 9-1Rear tire 90/100-16 52M Owner's manual p. 9-1Front tires 70/100-19 at MotoSport Tubes 70/100-19 at MotoSport Rear tires 90/100-16 at MotoSport Tubes 90/100-16 at MotoSport
Engine oil: Engine oil spec SAE 10W-40; API service SG type or higher, JASO standard MA Owner's manual p. 9-1Engine oil capacity (oil change) 1000 ml (33.8 fl oz) Owner's manual p. 9-1Engine oil at MotoSport

In stock at MotoSport

Prices from MotoSport’s catalog of Oct 14, 2026; check today’s price before you buy.

Front tire, stock size 70/100-19

Rear tire, stock size 90/100-16

Engine oil, stock viscosity 10W-40

Matched on viscosity only. The manual prints: SAE 10W-40; API service SG type or higher, JASO standard MA. Check the label for the rest.

Prices and stock from MotoSport's product catalog on Oct 14, 2026; they change, so check the price at MotoSport before you buy. Products are chosen by exact stock size, code or oil viscosity from the specs above, known brands first, then price. We have not tested them.

6 part specs not yet verified; see data coverage.

Use this bike

Tools for this bike

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Riding

Where kids can ride: tracks and areas whose own pages mention young riders.

Gearing tool

The calculator prefills from this bike once its stock sprockets are verified. It works with any numbers in the meantime.

Open the gearing calculator

What's missing

14 of 29 fields read off a manual page.

Not yet verified (13): front sprocket, rear sprocket, chain pitch, chain links, front rim, rear rim, fork spring rate, shock spring rate, static sag, race sag, fork oil, fuel octane, valve clearance.

From a spec sheet, awaiting a manual page (2): fork travel, shock travel.

See coverage for every bike

Sources

1
Yamaha Owner's Manual, MOTORCYCLE TT-R125LEV1, BSR-F8199-14, P/N LIT-11626-40-44, printed 2026.04 (Yamaha Motor Owner's Manual Library, USA; library lists it as TT-R125LWE, model year 2027); no model year printed, Yamaha's own owner's manual library files it under model year 2027 (owner decision 2026-10-12)pp. 7-8, 7-14, 7-16, 7-21, 7-23, 9-1, 9-2Manual page, verified. Covers front tire, rear tire, fork, engine oil spec, engine oil capacity (oil change), fuel capacity, tire pressure (off-road), spark plug and gap, chain slack, seat height, wheelbase, weight (curb weight), engine oil figure, as labelled, weight, as labelled, brake fluid, idle speed; checked 2026-10-16.
2
Yamaha Motor Corp., U.S.A., 2027 TT-R125LE specifications pageManufacturer web or spec sheet, research level. Covers fork travel, shock travel; checked 2026-10-11.

Always confirm against the manual for your exact year before ordering parts or setting up suspension. Torque specs are deliberately not published here. How we verify a value.

Your manual prints something different? Report a value with the page it is on; every fix is listed in the corrections log.

My settings

Date / track
Sprockets run
Race sag / free sag
Fork air pressure or spring
Fork clickers (compression / rebound)
Shock clickers (low / high / rebound)
Tire pressures (front / rear)
Notes

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