Aluminium-steel composite frame design
- Frame: During the course of developing the FREERIDE 250 R, KTM design engineers pulled out all the stops to exploit the full potential of the substantially more compact two-stroke engine. As with the FREERIDE 350, the frame is a composite construction comprising high-grade, chrome-molybdenum steel profiles bolted together with forged light-alloy components. However, compared with the FREERIDE 350 frame, the compact two-stroke engine with its laterally routed exhaust has allowed the lower frame tubes to be raised by a whole 60 millimetres. This results in significantly greater ground clearance - in conjunction with the large steering lock, a benefit that becomes all the more apparent, the tougher the terrain: Particularly when negotiating trials sections, the FREERIDE 250 R bottoms out much later.
- Subframe: The bolted subframe made from high-strength plastic impresses with high inherent stability and makes a significant contribution to the lightweight-construction concept of the FREERIDE 250 R. The rider can get a firm hold at the integrated grip recesses well-protected from dirt should the rear wheel ever become stuck in the mud.
- Battery: The Freeride 250 R is the first KTM motorcycle to be equipped as standard with a lithium-ion starter battery. This innovative technology not only saves one kilo of weight, it impresses above all with significantly greater efficiency, thereby ensuring higher efficiency of the electric starter system - in other words: the battery doesn't give up the ghost, even when started frequently.
Pioneering vehicle concept
- Swingarm: Weighing only 3.2 kg, the light-alloy cast swingarm has been designed by KTM chassis experts to support the suspension system comprising frame and suspension components with targeted flexibility in the direction of oscillation. At the same time, it contributes with its high torsional stiffness to the outstanding tracking stability of the FREERIDE 250 R. The progressively functioning acting PDS shock absorber is hinged directly at the swingarm.
- Wheels and tyres: The FREERIDE 250 R rolls on extremely light, spoked wheels with anodized, light-alloy rims from GIANT, CNC-machined hubs and light-alloy spoke nipples. The Trial-Maxx tyres derived from the world of trial sport, in sizes 2.75-21 and 4.00-18, have been specially developed by Maxxis for the KTM FREERIDES. They feature a soft, grippy compound and, compared with trials tyres, a much higher proportion of negative profile. This improves self-cleaning on muddy surfaces, without the tyres breaking up the ground excessively. Furthermore, the Maxxis tyres bestow the FREERIDE 250 R with perceptibly more agile handling and they are much more durable than pure trials tyres.
- Brakes: The Formula brake system complies with KTM's high standards and was specially designed for the FREERIDE. The radially bolted brake callipers, with four pistons at the front and two at the rear, harmonise perfectly with the lightweight wave brake discs (260/210 mm) and provide optimum braking performance with outstanding application.
- Fuel tank: Thanks to the more compact two-stroke engine compared with the four-stroke model, KTM engineers managed to design the lightweight, polyethylene fuel tank with a 7-litre capacity. It lies well protected between the upper frame profiles below the seat, which is tipped up for refuelling. Thanks to the transparent plastic, the rider can see the fuel level at a glance.
- Air filters: Located at the rear of the tank, the air filter is well protected and easily accessible. Thanks to its larger filter surface area, the much enlarged air filter cartridge, compared with the four-stroke model, is less susceptible to contamination and enables higher air throughput.
- Foot pegs: Light and wide, precision-cast foot pegs guarantee reliable contact with the bike and the highest levels of stability. Their eccentric supports allow the foot pegs to be displaced by eight millimetres longitudinally. In addition to ergonomic fine tuning, this also allows traction and cornering characteristics to be influenced significantly with the right riding technique.
- Suspension components: In conjunction with high quality, CNC-machined triple clamps, a sturdy upside-down fork from WP Suspension, featuring 43-mm outer tubes, bestows the FREERIDE 250 R with outstanding stability and guarantees excellent responsiveness plus perfect damping. Its taut basic setup harmonises perfectly with the PDS rear shock from WP, which features a progressively wound suspension spring. As ever with exceptional suspension comfort, this makes the suspension on the FREERIDE 250 R very well-balanced both front and rear, with high resistance to bottoming out - an advantage, particularly in faster sections on demanding terrain. The damping features adjustable rebound and compression stages and the shock absorber even offers separate high and low-speed adjustment options for compression damping. Those who are still not completely satisfied with the comparatively low seat height of 915 millimetres on the FREERIDE 250 R can find a lowering kit in the KTM PowerParts range, with suspension travel reduced by 25 millimetres.
- Bodywork and graphics: Thanks to its extremely slender seat and spoiler profile, the bodywork on the FREERIDE 250 R offers unrestricted freedom of movement with particularly ergonomic contact surfaces. The graphics are mostly in-mould graphics integrated directly into the plastic parts - a modern, extremely robust and lightweight solution.
- Seat: The long, slender seat provides unrestricted freedom of movement and a very good level of seating comfort. Thanks to an integrated release mechanism, it can be tipped up easily to gain access to the fuel tank, air filter and electrics. Compared with a competition enduro, the seat height of only 915 millimetres is much more moderate. If you'd like it even lower, you can find a lowered seat (accessory) in the PowerParts range.
- Speedo instrument: The FREERIDE models are equipped with a digital instrument cluster from Trail Tech, featuring integrated indicator lights, which impresses with numerous functions and particularly intuitive operation.
- Handlebar: The lightweight, tapered handlebar made from high-strength aluminum has four different positions, so it can be ideally adjusted to fit the rider.
- Engine: To power the FREERIDE 250 R, the KTM design engineers took the two-stroke engine from the 250 EXC competition enduro and subjected it to comprehensive refinements, thereby reducing the weight of the already particularly lightweight power unit - in spite of electric starter - by a whole two kilograms and tuning it for optimal rideability. The engine on the FREERIDE 250 R is equipped with its own cylinder, featuring ducts and valve timing adapted to the desired torque curve, as well as a matching piston. Similarly to trials motorcycles, the elaborate exhaust control system of the 250 EXC has been omitted, which not only has a beneficial effect on the torque curve but also on the durability of the piston. That makes this engine even less complicated and even more robust.
- Clutch: Both the FREERIDE 250 R and the FREERIDE 350 are equipped with an undamped CCS (coil spring steel) clutch, featuring a wear-free steel cage and a clutch package tuned especially for the FREERIDES with seven steel carrier lining discs. Not least thanks to the special friction linings and softer springs, this clutch is characterised by optimized disengagement, while the hydraulic clutch armature from Formula ensures that the clutch is always easily and precisely controlled.
- Electric starter: A quicker gear reduction between the electric starter and the engine ensures a higher engine starting speed and hence, in conjunction with the lithium-ion battery, significantly higher starting reliability.
- Transmission: Compared with the 250 EXC, the 6-speed gearbox specially developed for the FREERIDE models has shorter transmission ratios, while the extended sixth gear is effectively designed as an overdrive. A short secondary gear ratio of 46 to 12 (FREERIDE 350 12/48) guarantees powerful traction and lively acceleration, especially in demanding terrain.
- Radiator: Waste heat from the engine is dissipated via a single-piece, protected, integrated radiator. A fan fitted as standard together with the thermoswitch, guarantees stable temperature management, even at a slower pace in tough terrain.
- Exhaust: The FREERIDE 250 R is equipped with a specially developed, low-noise exhaust system, featuring a light-alloy silencer and a slender soundbox, that contributes to the high-torque engine characteristics. In contrast to the header laid under the engine on the FREERIDE 350, KTM design engineers succeeded in locating the header on the FREERIDE 250 R to one side and integrating it optimally into the bike. Similarly to the sports enduros, the two-stroke FREERIDE is homologated with a special power reduction and can even be approved for use on public roads in this version.
- Design: 1-cylinder, 2-stroke engine
- Displacement: 249 cm³
- Bore: 66.4 mm
- Stroke: 72 mm
- Starter: Electric starter
- Transmission: 6-speed
- Primary drive: 26:72
- Secondary gear ratio: 14:46
- Clutch: Wet, CSS multi-disc clutch, Formula hydraulics
- EMS: Kokusan
- Frame design: Perimeter steel-aluminium composite frame
- Front suspension: WP upside-down Ø 43 mm
- Rear suspension: WP PDS shock absorber
- Suspension travel (front): 250 mm
- Suspension travel (rear): 260 mm
- Front brake: Disc brake
- Rear brake: Disc brake
- Front brake disc diameter: 260 mm
- Rear brake disc diameter: 210 mm
- Chain: 5/8 x 1/4"
- Steering head angle: 67 °
- Wheelbase: 1418 ± 10 mm
- Ground clearance: 380 mm
- Seat height: 915 mm
- Tank capacity (approx.): 7 l
- Weight READY TO RACE (without fuel): 92.5 kg