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 Racing is the base of Rieju’s enduro line, and it isn’t a stripped one: KYB AOS fork, a KYB shock adjustable for high- and low-speed compression, Nissin brakes on Galfer discs, electric start and three power maps on a handlebar switch.
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
- 37″
- 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
- Wheels
- Excel aluminum rims, 21/18
- Tires
- Mitas Terra Force-EF Super Light
- Bars & grips
- Neken, 28 mm
- Battery
- Lithium
- Headlight
- New MR-range LED (2027)
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.
Two-stroke hit. No jetting.
Two Bosch injectors — one for low rpm, one for high — feed the throttle body, and an electronic power valve does the rest. Race map for full power, Forest for control, Wet for slick rock and roots.
A counter-rotating balance shaft and a light-pull diaphragm clutch keep it calm over a long day.
KYB at both ends.
A 48 mm KYB AOS closed-cartridge fork and a KYB shock on a progressive linkage: 11.8 inches of travel up front, 12.2 out back. Chrome-moly spine, detachable aluminum subframe.
What the extra $1,200 buys.
The Pro adds a DLC-coated fork, X-Trig clamps, Renthal bars, Michelin tires and red machined hubs. The engine, frame and suspension are the same — the Racing is the one to buy if you plan to pick your own tires and bars anyway.
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.
- It’s a 37-inch seat. Shorter riders should look at the Hard Enduro’s lowered seat or ask us about lowering.
- 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.
Do you have one I can see?
The 2026 MR 300 Racing and Pro are on our floor in Centerville right now — same platform, previous year’s graphics and headlight.
Where do parts come from?
Rieju’s US importer in Texas. Order through our parts counter.