2026 TM Racing MX250ES
General Specifications
| Model | TM Racing MX 250 ES 2T |
| Year | 2026 |
| Category | Motocross |
| Engine Type | Single-cylinder, 2-stroke, reed-valve induction with electronic exhaust valve |
| Weight | 95 kg without fuel |
Engine
| Displacement | 249.3 cc |
| Bore x Stroke | 66.4 x 72 mm |
| Compression Ratio | |
| Fuel System | Keihin PWK 38 mm carburettor | Replacement Options |
| Ignition | eMoticom electronic engine management with electronic exhaust valve control |
| Spark Plug | NGK BKR8EIX |
| Spark Plug Gap | |
| Cooling System | Liquid cooled |
| Starting System | Electric start |
Transmission
| Transmission | 5-speed manual |
| Clutch | Wet multi-disc, hydraulically operated |
| Final Drive | RK 520 MXU chain |
Dimensions
| Overall Length | |
| Overall Width | |
| Overall Height | |
| Wheelbase | |
| Ground Clearance | 360 mm |
| Seat Height | 985 mm |
| Fuel Capacity | 9 litres |
Chassis
| Frame | Self-tempering aluminium Deltabox-type single-beam frame with extruded, forged and micro-cast components |
| Front Tyre | 80/100-21 | Tyre Size Guide |
| Rear Tyre | 110/90-19 | Tyre Size Guide |
Suspension
| Front Suspension | Kayaba AOS 48 mm closed-cartridge coil-spring fork, adjustable compression and rebound damping | Fork Oil Levels |
| Front Suspension Travel | 310 mm |
| Rear Suspension | TM Racing monoshock, adjustable spring preload, high/low-speed compression and rebound damping |
| Rear Suspension Travel | 300 mm |
| Fork Oil | |
Brakes & Wheels
| Front Brake | Brembo 2-piston hydraulic caliper, 270 mm disc |
| Rear Brake | Nissin single-piston hydraulic caliper, 240 mm disc |
| Front Wheel Size | 21 inch |
| Rear Wheel Size | 19 inch |
Service Data
| Fuel Type | Premium unleaded petrol with high-quality synthetic 2-stroke oil premix |
| Premix Information | Premixed petrol and 2-stroke oil | Premix Calculator |
| Gearbox Oil | |
| Air Filter | Washable oiled foam element |
| Service Notes | Competition motocross motorcycle. Maintain the air filter after dusty riding, inspect the piston and rings at competition service intervals, keep the electronic exhaust-valve system operating correctly, change transmission oil regularly, and service the Kayaba fork and TM Racing rear shock according to competition use. |
2026 TM Racing MX 250 ES 2T – Italian Two-Stroke Motocross Refined
The 2026 TM Racing MX 250 ES 2T is an evolutionary update rather than an all-new generation, but it remains one of the most distinctive 250 cc two-stroke motocross bikes still in production. Built in Pesaro, Italy, the TM combines traditional two-stroke architecture with unusually high-specification chassis components and modern electronics. Electric starting, introduced to this model for 2025, continues for 2026.
The 249.3 cc engine retains its proven 66.4 x 72 mm bore and stroke, V-Force reed induction and 38 mm Keihin PWK carburettor. An electronically controlled exhaust valve helps broaden the delivery while retaining the sharp response expected from a competition 250 two-stroke. Owners working with the original PWK can consult the MXOwners carburettor information and replacement options.
For 2026 TM concentrated on refinement rather than replacing the established platform. Updates include changes to the clutch, exhaust silencer, radiator deflectors and footpegs, together with revised rear-shock settings and new graphics. The aluminium Deltabox-style frame continues, matched to a 48 mm Kayaba AOS closed-cartridge fork with 310 mm of travel and TM Racing's own rear shock providing 300 mm.
Braking equipment remains an unusual premium combination, with a Brembo front system using a 270 mm disc and Nissin equipment at the rear with a 240 mm disc. Full-size 21-inch front and 19-inch rear wheels reinforce that the MX 250 ES is a dedicated motocross machine rather than an enduro model. Owners setting up or servicing the front end can also refer to the MXOwners fork oil reference.
The result is a modern motocross bike that still delivers the mechanical character that made big two-strokes famous. While most manufacturers have concentrated development on four-strokes, TM has continued refining its 250 two-stroke as a serious race motorcycle. The 2026 MX 250 ES is therefore both thoroughly modern and refreshingly traditional: aluminium chassis, premium suspension, electric starting and electronic exhaust control wrapped around a carburetted 250 cc two-stroke engine.
