The Rieju MR PRO 300 i 2026 is designed for riders who want a true competition-focused enduro bike with premium hardware straight from the factory. Rieju describes it as light, agile and highly reactive, built to take hard enduro riding to a higher level while keeping the raw character riders expect from a serious 2-stroke machine.

At the heart of the bike is a new 298 cc 2-stroke single-cylinder engine with TFI, or Throttle-Body Fuel Injection. Rieju says the system uses two specific Bosch injectors for high and low revs, aiming to preserve the feel of a classic carburetted 2-stroke while adding the smoothness and efficiency of modern fuel injection. The bike also features an integrated electric starter, liquid cooling with electric fan, a 6-speed gearbox, reed intake with VForce 4 box, and a Rieju Power Racing by OXA exhaust.

One of the strongest selling points is how adaptable the MR PRO 300 i is in changing conditions. It comes with three differentiated power maps — Race, Forest and Wet — along with an electronic exhaust valve, a counter-rotating balance shaft and a new oil-immersed multi-plate diaphragm clutch. Together, those features are aimed at giving the rider stronger control, smoother running and more confidence on technical terrain.

The chassis package is equally impressive. Rieju equips the bike with a chrome-molybdenum central chassis, detachable aluminium subframe, aluminium swingarm with progressive linkage, a 48 mm KYB inverted closed-cartridge fork with AOS system and black DLC anti-friction treatment, plus a fully adjustable KYB rear shock with preload, rebound and high/low-speed compression adjustment. Suspension travel is listed at 300 mm front and 310 mm rear.

Premium finishing details help reinforce the PRO identity. The official page highlights Renthal Fatbar 802 handlebars, Renthal grips, an anti-slip seat with added grip strips, Polisport handguards, EXCEL spoked rims and Michelin Enduro Medium tyres in 90/90-21 front and 140/80-18 rear sizes. This gives the MR PRO 300 i a clear race-ready feel before it even leaves the stand.

Braking is handled by Nissin caliper and pump sets with a 260 mm NG floating front disc and a 220 mm NG rear disc. Rieju lists the bike at 1,475 mm wheelbase, 949 mm seat height, 320 mm ground clearance, 9.8-litre fuel capacity and 103.5 kg dry weight, all of which support its lightweight, technical enduro focus.

Why choose the Rieju MR PRO 300 i 2026: it blends the raw excitement of a 2-stroke enduro bike with modern fuel injection, adjustable ride modes and a genuinely premium chassis package. For riders who want a serious new Rieju for demanding enduro riding, this is one of the most focused machines in the range.

Key Highlights

• 298 cc 2-stroke single-cylinder TFI engine.
• Two Bosch injectors for high and low revolutions.
• Three power maps: Race, Forest and Wet.
• Integrated electric starter.
• Liquid cooling with electric fan.
• 6-speed gearbox with new diaphragm clutch.
• Electronic exhaust valve and counter-rotating balance shaft.
• 48 mm KYB inverted closed-cartridge fork with DLC treatment.
• Fully adjustable KYB rear shock with progressive linkage.
• EXCEL rims with Michelin Enduro Medium tyres.
• Nissin brakes with 260 mm front and 220 mm rear NG discs.
• 103.5 kg dry weight and 9.8 L fuel tank.

Suggested Magento Attributes

Bike Type
Off-Road / Enduro / Hard Enduro.

Engine
New 2-stroke single-cylinder TFI engine.

Displacement
298 cc.

Injection
2 specific Bosch injectors for high and low revolutions.

Starter
Integrated electric starter.

Cooling
Liquid cooling + electric fan.

Power Maps
Race / Forest / Wet.

Transmission
6-speed gearbox.

Clutch
Oil-immersed multi-plate diaphragm clutch.

Intake
Reed with VForce 4 box.

Exhaust
Rieju Power Racing by OXA.

Frame
Chrome-molybdenum central chassis.

Subframe
Detachable aluminium.

Swingarm
Aluminium with progressive linkage system.

Front Suspension
48 mm KYB inverted closed-cartridge fork with AOS system, compression and extension regulation, DLC anti-friction treatment.

Rear Suspension
KYB shock with preload, rebound and high/low-speed compression adjustment.

Suspension Travel
Front 300 mm / Rear 310 mm.

Handlebars
28 mm Renthal Fatbar 802.

Grips
Renthal.

Hand Guards
Polisport.

Seat
Anti-slip with additional grip strips.

Front Wheel
1.6 x 21 EXCEL spoked rim with 90/90-21 Michelin Enduro Medium tyre.

Rear Wheel
2.15 x 18 EXCEL spoked rim with 140/80-18 Michelin Enduro Medium tyre.

Front Brake
Nissin caliper and pump set with 260 mm NG floating disc.

Rear Brake
Nissin caliper and pump set with 220 mm NG disc.

Wheelbase
1475 mm.

Seat Height
949 mm.

Ground Clearance
320 mm.

Fuel Tank Capacity
9.8 litres.

Dry Weight
103.5 kg.

Dimensions
2145 x 810 x 1235 mm.