Adjust the fitLowering kit, bar risers, rearsets — see how mods change your posture›
What-if only — simulates common aftermarket changes, not the stock bike.
Seat height870 mm
Forward lean0°
Knee angle82°
Hip angle119°
Data confidence: HighWhoever opens it sees your size and fit adjustments on this bike.
The KTM 390 Adventure R/X (2025+) has a 870 mm (34.3 in) seat height and a 1481 mm wheelbase. For an average 175 cm rider that works out to about 0° of forward lean with the knees bent to about 82°, and that rider can get neither foot down. See the riding-position diagram above, and enter your own height and inseam to see your fit. The KTM 390 Adventure R/X (2025+) is LAMS-approved (learner-legal to ride in Australia).
The KTM 390 Adventure R/X (2025+) in the real world
The 390 Adventure is KTM’s LAMS-legal gateway into proper adventure riding, and this generation splits into two very different fits. The off-road-focused R rides tall — an 870 mm seat over a 21-inch front wheel, long-travel suspension and a stance built for standing on the pegs. The road-biased X sits noticeably lower on smaller cast wheels with shorter travel, around 825 mm, aimed squarely at riders who want the adventure look and upright comfort without the standover of the R. Our simulation uses the taller R geometry, so treat it as the top of the range and subtract if you’re looking at the X.
In both forms the bike is light and slim, which does most of the heavy lifting for reach. There’s very little width where the seat meets the tank, so your legs drop close to straight and the seat-height figures ride smaller than they read — a big deal on the R, where the number alone would scare off shorter riders who actually manage it fine. The posture is upright and slightly forward with a tall wide bar, and the pegs are positioned so that moving from seated to standing on gravel is natural. It’s an easy bike to be tall on and, in X form, a genuinely accessible one to be short on.
Who the 390 Adventure R/X fits
The R (870 mm) suits riders 178 cm and up who want real off-road travel and a natural standing position; it’s tall but slim, so reach beats the number.
The X (around 825 mm) is the pick for shorter and road-focused riders — same upright cockpit, far more approachable standover.
Average-height riders (around 170 cm) will likely tip-toe the R but flat-foot or near-flat-foot the X — the variant choice matters more than any accessory here.
Low mass is the shorter rider’s friend: even on the taller R, the bike is easy to balance and paddle once you’re used to the height.
The upright, slightly forward stance and wide bar make standing on the pegs off-road comfortable without bar risers.
Common fit & comfort changes
Choose the X over the R — The single biggest fit decision: the road-focused X sits roughly 45 mm lower than the R on smaller wheels and shorter travel — no accessory drops an R that far while keeping it composed.
Low seat — KTM’s PowerParts and the aftermarket offer lower seats that shave around 20 mm — useful for a rider who wants the R but needs a touch more reach.
Lowering kit — A suspension lowering kit brings the R down further for shorter riders, at the cost of some of the ground clearance and travel that define the R in the first place.
Most of these can be previewed on your own body with the “Adjust the fit” sliders in the simulator above.
How tall is the KTM 390 Adventure R/X (2025+) seat?
The KTM 390 Adventure R/X (2025+) has a seat height of 870 mm (34.3 inches).
Can a 175 cm rider flat-foot the KTM 390 Adventure R/X (2025+)?
On its 870 mm seat, a 175 cm rider (about 80 cm inseam) can typically get neither foot down on the KTM 390 Adventure R/X (2025+). Taller or shorter riders differ — use the simulator to check your own ground reach.
What is the riding position of the KTM 390 Adventure R/X (2025+)?
For an average 175 cm rider, the KTM 390 Adventure R/X (2025+) riding position (also called the seating position) works out to about 0° of forward lean with a 82° knee bend. See the riding-position diagram to judge the posture for your own body size.
Is the KTM 390 Adventure R/X (2025+) LAMS-approved?
Yes — the KTM 390 Adventure R/X (2025+) is LAMS-approved, so it is legal for learner and provisional riders in Australia.
Is the KTM 390 Adventure too tall for short riders?
It depends which one. The off-road R is tall at 870 mm, but it’s light and very slim, so riders around 172 cm manage it better than the figure implies. If reach is your main worry, the road-focused X sits about 45 mm lower (roughly 825 mm) on smaller wheels — the easiest fix is choosing that variant. Check your inseam against the R geometry in the simulator, then subtract for the X.
What’s the difference in seat height between the KTM 390 Adventure R and X?
The R is the tall off-road version at 870 mm with a 21-inch front and long-travel suspension for standing and rough terrain. The X is the lower road-biased version at around 825 mm on smaller cast wheels with shorter travel, sharing the same upright cockpit but a far more accessible standover for shorter riders.
Seat height & wheelbase come straight from the manufacturer’s published specs, verified across the maker’s site, media reviews and spec databases.
Handlebar & footpeg positions aren’t published by any manufacturer. Where a true side-profile photo exists, we mark five reference points on it (front & rear axle, seat, grip, peg) and convert pixels to millimetres using the known wheelbase as the scale. Where it doesn’t, we research the grip and peg heights and estimate the horizontal reach from class-typical geometry.
Every result is cross-checked against how reviewers describe the bike’s posture (upright / sporty / committed), and each bike page carries a data-confidence badge so you can see how solid its numbers are.
The drawing is a clean schematic — one shared template per bike type (naked, sport, cruiser, adventure, touring, dirt), anchored to each bike’s real seat, grip and peg coordinates — so you compare riding positions, not paint jobs.
Your figure is a stick model built from your height and inseam using standard body-proportion ratios, then posed by inverse kinematics — hips on the seat, hands on the bars, feet on the pegs — with the same posture solver for every bike.
Bottom line: seat height & wheelbase are hard data; handlebar/footpeg geometry and ground reach are calibrated estimates (see each bike’s data-confidence badge). Always sit on the real bike before you buy.