Order-in: the 2027s aren’t on the floor yet. Tell us the model and we’ll confirm price and delivery with Rieju’s US importer before you put money down.
The MR 300i Hard Enduro is the most-equipped bike Rieju makes, set up for the slow, technical riding that cooks clutches and radiators: more flywheel inertia, a higher-flow water pump, dual electric fans, a Hard Offroad exhaust, an 11-tooth countershaft sprocket and a lowered seat.
Engine
- Engine
- 298cc two-stroke single, liquid-cooled
- Bore × stroke
- 72 × 72.52 mm
- Fuel system
- TFI throttle-body injection, two Bosch injectors (low and high rpm)
- Power maps
- 3 — Race, Forest, Wet
- Exhaust valve
- Electronic
- Starter
- Electric
- Gearbox
- 6-speed
- Clutch
- Diaphragm, multi-disc, oil bath
- Intake
- Reed, V-Force 4
Chassis
- Frame
- Chrome-moly central spine, detachable aluminum subframe
- Swingarm
- Aluminum, progressive linkage
- Fork
- KYB 48 mm inverted, closed cartridge, AOS — compression and rebound adjustable
- Shock
- KYB — preload, rebound, high- and low-speed compression
- Travel
- 11.8″ front / 12.2″ rear
- Brakes
- Nissin calipers, Galfer wave discs — 260 mm front, 220 mm rear
Size
- Seat height
- 36.5″ (lowered seat)
- Ground clearance
- 12.5″
- Wheelbase
- 58″
- L × W × H
- 84 × 32 × 48″
- Fuel
- 2.58 gal
- Dry weight
- 230 lb
Equipment
- Exhaust
- Rieju Power Racing by OXA, Hard Offroad version
- Engine mods
- Inertia sleeve, high-flow water pump, specific spark plug
- Cooling
- Dual electric fans, specific expansion tank
- Gearing
- 11-tooth countershaft sprocket
- Rear disc
- 220 × 5 mm Hard Offroad disc with guard
- Wheels
- Excel rims, black machined hubs (Hard Enduro only)
- Tires
- Michelin Enduro Medium
- Bars
- Renthal Fatbar 802
- Triple clamps
- Black X-Trig
- Protection
- Skid plate, swingarm guard, disc guards, aluminum handguards, pull straps
- Seat
- Hard seat, lowered foam, grip strips
Rieju took over the old GasGas enduro platform in 2019 and has been building it out in Figueres, Spain, ever since. The MR 300i is the result: a 298cc two-stroke with Rieju’s own throttle-body fuel injection — no jetting for altitude, which matters when the same day starts in Centerville and ends at 9,000 feet.
Torque low. Heat out.
An inertia sleeve and a specific spark plug smooth the hit and pull from the bottom; the OXA Hard Offroad exhaust is tuned for traction, not top speed. Two fans and a bigger expansion tank keep it cool at walking pace.
Protection that’s optional on the others.
Skid plate, swingarm guard, front and rear disc guards, machined aluminum handguards, offset footpegs and front and rear pull straps come on it. So do black X-Trig clamps, a Renthal Fatbar 802 and a 220 × 5 mm Hard Offroad rear disc.
Utah has plenty of this.
Rocky climbs, ledgy canyons and slow technical loops are where the Hard Enduro earns its extra $500 over the Pro. If your riding is mostly fast two-track, the Pro is the better tool.
Watch it run
What we'd tell you in the shop.
- Rieju’s factory warranty is 6 months — shorter than the big Japanese brands. Repairs go through us.
- The short gearing and inertia sleeve that make it great in the rocks cost top speed on fast roads between sections.
- It’s an order-in bike: none of the 2027s are on the floor yet. We confirm the price and delivery date before you put money down.
- MSRP from Rieju’s 2027 US retail price list, before destination, setup, tax, title and fees. Rieju prices can change with import tariffs — we confirm yours before you put money down.
Questions we actually get.
Is this a GasGas?
It’s what the GasGas enduro platform became. Rieju took it over in 2019; the MR 300i adds Rieju’s own fuel-injected engine, developed in Spain.
Hard Enduro or Pro?
Hard Enduro for slow, technical, hot riding; Pro for fast trails. The engine mods, fans, armor and lower seat are the difference.
Do you have one I can see?
The 2026 MR 300 Racing and Pro are on our floor in Centerville — same platform. The 2027 Hard Enduro is order-in.