Cruiser · 2023

Harley-Davidson Nightster ergonomics: seat height, rider triangle & fit

The Harley-Davidson Nightster has a 27.8 in seat. Here’s how riders of different sizes fit, and what you can change.

Seat height: 27.8 in
Wet weight: 487 lb
Wheelbase: 60.8 in
Power: 66 kW

Specs: ManufacturerBars & pegs: EstimatedSeat 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.

69Compromised

Specs: ManufacturerBars & pegs: Estimated

V-twin (60°) · 975 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

69/100

Compromised

Knee 62°

Tighter than comfortable

Comfort 72–120°

Hip 92°

Within range

Comfort 85–130°

Elbow 150°

Within range

Comfort 125–176°

Back lean 4°

Within range

Comfort -12–10°

Ground reach

4.1 in to spare

Both feet flat, knees bent

Seat height with sag: 27.0 in
Leg length needed: 28.7 in
Your inseam + boots: 32.8 in

Wind

Full wind on chest and helmet

Suggested fixes

Peg lowering kit -1.4 in

Fit score 69 → 81

Find parts ↗
Taller seat +1.4 in

Fit score 69 → 79

Find parts ↗

Compare

Estimate. Handlebar and peg positions for this bike are estimated. 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, knees bent.
Taller riders: at 6′4″, knee angle is about 56°; fit score 65/100.

Rider	Inseam	Fit	Ground reach	Knee	Lean
5′1″	28.1 in	87	Both feet flat	72°	10°
5′4″	29.5 in	80	Both feet flat, knees bent	68°	7°
5′7″	30.8 in	74	Both feet flat, knees bent	65°	6°
5′10″	32.2 in	68	Both feet flat, knees bent	61°	4°
6′1″	33.5 in	65	Both feet flat, knees bent	59°	3°
6′4″	35 in	65	Both feet flat, knees bent	56°	1°

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	27.8 in	Manufacturer
Seat width at the front	11.0 in	Estimated
Handlebar grip	19.7 in ahead of the seat, 10.0 in above it	Estimated
Footpeg	8.3 in ahead of the seat, 11.8 in off the ground	Estimated
Wheelbase	60.8 in	Manufacturer
Wet weight	487 lb	Manufacturer
Rake	30°	Manufacturer
Trail	5.2 in	Manufacturer
Engine	V-twin (60°) · 975 cc	Manufacturer
Power	66 kW	Manufacturer
Tyres	100/90-19 / 150/80-16	Manufacturer
Category	Cruiser	Manufacturer