RIEJU is the first brand to reveal a 2026 enduro model – and it’s a big one. The Spanish manufacturer has launched the all-new MR 300i MY26 in both Racing and PRO versions. This marks a huge leap forward for RIEJU, especially with their brand-new fuel-injected two-stroke engine—developed and built entirely in Spain.
At the heart of this new machine is a 300cc 2-stroke engine equipped with electronic fuel injection (TFI system). This tech uses dual Bosch injectors, giving riders sharp, instant throttle response like a carburetor, but with better fuel efficiency, smoother power, and lower emissions. It’s a perfect mix of old-school two-stroke excitement and modern reliability. The engine also includes a balance shaft to reduce vibrations and an electronic exhaust valve that adjusts automatically for smoother power across the rev range.
Three different riding modes—Race, Forest, and Wet—allow you to fine-tune the bike for different terrain and conditions. And on the PRO version, RIEJU introduces a brand-new diaphragm clutch, which makes gear changes feel smoother and more precise, especially useful in tricky, technical terrain.
When it comes to the chassis, the MR 300i continues with a steel frame and aluminum subframe, proven tough and light. Suspension is top-shelf KYB gear front and rear. The 48mm KYB fork has a closed cartridge AOS system for maximum control, while the rear shock is fully adjustable—ready for any challenge.
Weighing only 102.6 kg (Racing) and 103.5 kg (PRO), this bike is incredibly agile. It turns sharply, handles tough climbs, and blasts through technical trails with ease. But this machine isn’t made for beginners—RIEJU says it clearly: this is “PURA SANGRE”, a true-blooded Hard Enduro beast designed for skilled riders who want maximum performance and aren’t afraid to push the limits.
The fuel tank holds 9.8 liters, and combined with the efficient TFI engine, that means long rides without frequent stops. Even the base Racing version comes well-equipped with Excel rims, Mitas tires, Neken bars, OXA exhaust, and a lithium battery. The PRO version adds premium touches like DLC-coated forks, Renthal bars and grips, Polisport handguards, X-Trig seatpost, red anodized hubs, and Michelin Enduro Medium tires—plus an electric fan for extreme riding conditions.
Enduro Channel Comment – “The First Strike of 2026!”
We’ve been waiting for a real innovation in the 300cc two-stroke class, and RIEJU just delivered. Fuel injection isn’t new—but combining it with the feel and rawness of a traditional two-stroke? That’s rare. The MR 300i gives riders the best of both worlds: modern precision with old-school aggression.
This bike is clearly built by riders, for riders. Everything from the adjustable riding modes to the diaphragm clutch and counter-balancer shows that RIEJU is thinking about how real people ride—especially in Hard Enduro. And with test development coming straight from races like SuperEnduro, we expect this bike to be more than marketing hype.
RIEJU took a bold step by releasing the first MY26 bike before any of the big names. With this launch, they’re making a statement—and we’re here for it.
