Off-road · 2026

Yamaha TT-R125LE ergonomics: seat height, rider triangle & fit

The Yamaha TT-R125LE has a 31.7 in seat. Here’s how riders of different sizes fit, and what you can change.

Seat height: 31.7 in
Wet weight: 198 lb
Wheelbase: 50.0 in
Power: 7.3 kW

Specs: EstimatedBars & pegs: ManufacturerSeat width: Estimated

Try it with your measurements

Units

Your measurements

Height (in)

Inseam (in)

Arm length

Seated shoulder height

Boot sole

Preferred posture

Motorcycle

Modifications

Try common parts and see how they change your fit. The picture shows your setup over the stock bike.

Seat

Seat height0

Thicker or thinner seat. Lower makes it easier to reach the ground.

Lowering kit0

Lowers the whole bike. Easier to reach the ground, a little less legroom.

Handlebar

Bar risers0

Raises the bars. You sit more upright with less weight on your wrists.

Bar pullback0

Brings the bars closer to you. Shorter reach, good for shorter arms.

Footpegs

Lower pegs0

Lowers the footpegs. More knee room, less cramped legs.

Move pegs back0

Moves the pegs back (or forward). Further back feels sportier.

Windscreen

Windscreen height0

Taller or shorter screen. Changes how much wind hits your chest and helmet.

79Good fit

Specs: EstimatedBars & pegs: Manufacturer

Single · 124 cc · Hold W or Space to accelerate, ↑ / ↓ to change gear · Synthesised from the engine layout and firing order. Not a recording.

Original illustration, motorcycleergonomics.com

Fit score

79/100

Good fit

Knee 51°

Tighter than comfortable

Comfort 58–100°

Hip 103°

Within range

Comfort 82–118°

Elbow 134°

Within range

Comfort 110–165°

Back lean 6°

Within range

Comfort 0–25°

Ground reach

2.8 in to spare

Both feet flat, knees bent

Seat height with sag: 28.7 in
Leg length needed: 30.0 in
Your inseam + boots: 32.8 in

Wind

Full wind on chest and helmet

Suggested fixes

Taller seat +1.0 in

Fit score 79 → 88

Find parts ↗
Peg lowering kit -1.0 in

Fit score 79 → 87

Find parts ↗

Compare

Estimate. Handlebar and peg positions for this bike are manufacturer. Always sit on a bike before you buy it.

Fit by rider size

Shorter riders: at 5′4″ with a 29.5 in inseam, expect both feet flat.
Taller riders: at 6′4″, knee angle is about 47°; fit score 68/100.

Rider	Inseam	Fit	Ground reach	Knee	Lean
5′1″	28.1 in	87	Balls of both feet	59°	11°
5′4″	29.5 in	90	Both feet flat	56°	9°
5′7″	30.8 in	84	Both feet flat, knees bent	53°	8°
5′10″	32.2 in	78	Both feet flat, knees bent	51°	6°
6′1″	33.5 in	73	Both feet flat, knees bent	49°	5°
6′4″	35 in	68	Both feet flat, knees bent	47°	4°

Reference riders with average proportions and 20 mm boot soles. Your proportions may differ.

Spec sheet

Drawn to scale from this bike's geometry.

Geometry & specifications

Geometry & specifications	Value	Source
Seat height	31.7 in	Estimated
Seat width at the front	—	Estimated
Handlebar grip	17.3 in ahead of the seat, 7.5 in above it	Manufacturer
Footpeg	2.4 in ahead of the seat, 16.9 in off the ground	Manufacturer
Wheelbase	50.0 in	Estimated
Wet weight	198 lb	Estimated
Rake	28.5°	Estimated
Trail	4.2 in	Estimated
Engine	Single · 124 cc	Estimated
Power	7.3 kW	Estimated
Tyres	70/100-19 / 90/100-16	Estimated
Category	Off-road	Estimated