2027 Rieju MR 300i: Racing, Pro, and Hard Enduro Split Three Ways

Rieju has renewed its MR 300i enduro range for 2027 as three clearly differentiated versions — Racing, Pro, and Hard Enduro — all sharing the same Spanish-built 300 cc two-stroke with TFI electronic fuel injection and three power maps labeled Race, Forest, and Wet. Specialist coverage published September 4, 2026 (Motorcycle Powersports News) and Dirt Bike Magazine’s press-release reprint frame the story as a trim-and-protection update cycle rather than a clean-sheet motor.

Context: Rieju’s fuel-injected MR 300i platform is aimed at serious club enduro and hard-enduro riders who want two-stroke torque control without a carburetor. Dirt Bike Magazine notes Central Powersports Distribution as the U.S. importer. Trail Roamer treats MY27 as an equipment-matrix story for enduro shoppers comparing factory Hard Enduro kits against bolting guards onto a base bike.

What is new across the range, according to the OEM press sheet carried by MPN and Dirt Bike: a new LED headlight and redesigned front mask for low-light visibility, plus version-specific graphics. Shared powertrain language centers on the TFI 300i delivering immediate response with Race, Forest, and Wet maps.

MR 300i Racing is positioned as the compact, agile enduro trim. Published kit includes Racing 2027 graphics, EXCEL wheels with cast hubs and Mitas Terra Force tires, a Power Racing by OXA exhaust, Neken handlebar and grips, and Nissin brakes with Galfer discs.

MR 300i Pro steps up the race-kit hardware: Pro 2027 graphics, KYB fork with black anodized DLC anti-friction treatment, red XTRIG triple clamps, Renthal Fatbar, Power Racing by OXA exhaust, EXCEL wheels with red machined hubs and Michelin Enduro tires, and Nissin brakes with a floating Galfer front disc.

MR 300i Hard Enduro is the most fully equipped trim for slow technical work. Engine-side changes listed in the press sheet include an inertia bushing, a Hard water-pump cover with a higher-flow impeller, and a specific spark plug aimed at low-rev drive. Cooling adds a dedicated expansion tank and twin electric fan module. Chassis and protection items called out as standard on Hard (optional elsewhere) include a specific Hard exhaust, short final-drive ratio with AXP chain guide, EXCEL wheels with black machined hubs and Michelin Enduro tires, Nissin brakes with Galfer Wave discs (Hard-specific rear), AXP Enduro skid plate, swingarm protector, front and rear disc guards, machined aluminum handlebar protectors, offset stainless footpegs, tow straps, black XTRIG triple clamps, simplified wiring with twin start button, red Hard seat, and Hard 2027 graphics.

Pricing honesty: September 4–5 coverage republishing the MY27 press materials does not list U.S. MSRP for Racing, Pro, or Hard Enduro. Trail Roamer will not invent stickers. Earlier MY26 U.S. reporting had published Racing and Pro prices for that model year — treat those as historical, not MY27. Confirm MY27 dealer pricing with Central Powersports Distribution or an authorized Rieju dealer before any buy-guide publish.

Rider impact: If you race woods enduros on a injected 300 two-stroke and already like the MR 300i map set, MY27 is about picking a factory trim level — Racing for a leaner enduro, Pro for KYB/XTRIG race kit bits, Hard Enduro if you want twin fans, short gearing, and the AXP protection stack without building it yourself. Street-legal dual-sport shoppers should not treat MR 300i as a plated trail tourer; for plate-vs-dirt framing see Trail Roamer’s street-legal dual-sport vs dirt bike guide. Next action: ask your Rieju dealer which trim is actually landing in U.S. crates first, confirm map defaults, and budget chest protection and skid-plate service for rockier loops.

Primary outbound reading: Motorcycle Powersports News’ September 4, 2026 MR 300i lineup overview and Dirt Bike Magazine’s MY27 two-stroke press-release package. Trail Roamer angle in one line: three factory answers to one injected 300 — useful for hard-enduro and trail racers comparing Rieju against KTM/Husqvarna/Beta two-stroke kits without pretending this is a dual-sport touring launch.

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