| Model | Triumph TF 450-RC Edition |
| Year | 2025 |
| Category | Motocross |
| Engine Type | Single-cylinder, liquid-cooled, SOHC, 4-valve, 4-stroke engine |
| Weight | 108.6 kg wet |
| Displacement | 449.5 cc |
| Bore x Stroke | 95.0 x 63.4 mm |
| Compression Ratio | 13.1:1 (published specification; owner's handbook rounds to 13:1) |
| Fuel System | Dell'Orto electronic fuel injection throttle body with Athena engine management system |
| Ignition | Athena ECU-controlled electronic ignition with Ricky Carmichael-specific engine calibration, dual selectable maps, traction control and launch control |
| Spark Plug | |
| Spark Plug Gap | |
| Cooling System | Liquid-cooled with twin radiators and mechanically driven coolant pump; Triumph D2053 OAT premixed coolant, 2.4-litre system capacity |
| Starting System | Electric start |
| Transmission | 5-speed manual gearbox with electronic quickshifter for clutchless upshifts from second to fifth gear |
| Clutch | Steel wet multi-plate clutch with Belleville spring, hydraulic actuation and Triumph Racing Hinson clutch cover |
| Final Drive | Chain drive; 13-tooth front and 48-tooth rear sprockets |
| Overall Length | |
| Overall Width | 836 mm across handlebars |
| Overall Height | 1270 mm |
| Wheelbase | 1492 mm |
| Ground Clearance | |
| Seat Height | 960 mm |
| Fuel Capacity | 7.0 litres |
| Frame | Lightweight aluminium spine frame with fabricated aluminium swingarm; 27.4-degree rake and 116 mm trail |
| Front Tyre | 80/100-21 | Tyre Size Guide |
| Rear Tyre | 110/90-19 | Tyre Size Guide |
| Front Suspension | 48 mm KYB Air-Oil Separate (AOS) inverted closed-cartridge coil-spring forks, adjustable compression and rebound damping | Fork Oil Levels |
| Front Suspension Travel | 310 mm |
| Rear Suspension | KYB linkage-operated coil-spring monoshock with adjustable high-speed and low-speed compression damping and rebound damping |
| Rear Suspension Travel | 305 mm |
| Fork Oil | KYB AOS closed-cartridge fork suspension oil. Published original test settings identify 315 ml outer-chamber oil per fork leg, with a permitted adjustment range of approximately 290-365 ml using standard springs. Exact factory-approved oil grade and inner-cartridge fill quantity require confirmation from the Triumph workshop manual. |
| Front Brake | 260 mm hydraulic disc with Brembo floating twin-piston caliper, 24 mm pistons |
| Rear Brake | 220 mm hydraulic disc with Brembo floating single-piston caliper, 26 mm piston |
| Front Wheel Size | 21 x 1.60-inch D.I.D DirtStar aluminium spoked rim |
| Rear Wheel Size | 19 x 2.15-inch D.I.D DirtStar aluminium spoked rim |
| Fuel Type | Unleaded petrol meeting the minimum octane and fuel-quality requirements specified in the Triumph owner's handbook |
| Premix Information | Not applicable. Four-stroke engine with pressure-fed lubrication using two trochoidal oil pumps; do not add two-stroke oil to the petrol. |
| Gearbox Oil | Fully synthetic motorcycle engine oil compatible with the wet multi-plate clutch. Engine and gearbox share a common lubrication system. Factory handbook oil capacities: 1.05 litres without oil-filter replacement, 1.15 litres with filter replacement and 1.20 litres dry fill. Confirm the approved SAE viscosity and API/JASO classification against the applicable factory handbook before servicing. |
| Air Filter | Washable, reusable oiled foam air-filter element with tool-free airbox access |
| Service Notes | The 2025 Triumph TF 450-RC Edition is the first model year of Triumph's purpose-built 450cc motocross motorcycle. Officially unveiled on 3 October 2024, the model was developed with extensive input from motocross champion Ricky Carmichael. Its 449.5cc SOHC four-stroke engine incorporates a 95 mm bore, 63.4 mm stroke, electronic fuel injection and Athena engine management. Ricky Carmichael Edition equipment includes signature engine calibration, ODI Podium Flight RC4 handlebars, Triumph Racing Hinson clutch cover, XTrig holeshot device, gripper seat cover, front disc guard, signature graphics and standard Wi-Fi communication module for the MX Tune Pro system. The manufacturer specifies a five-speed gearbox, hydraulically operated Belleville-spring clutch, electric starting and electronic quickshifter. KYB 48 mm coil-spring forks provide 310 mm of travel, with 305 mm rear suspension travel. Brembo brakes use 260 mm front and 220 mm rear discs. Published dimensions include a 1492 mm wheelbase, 960 mm seat height, 836 mm handlebar width and 7.0-litre fuel capacity. Wet weight is 108.6 kg. The factory owner's handbook specifies 1.15 litres of engine oil with filter replacement, 1.05 litres without filter replacement and 1.20 litres dry fill. The cooling system holds 2.4 litres of Triumph D2053 OAT premixed coolant. The precise spark plug specification and electrode gap have not been independently confirmed and must be checked against the factory service manual. Maintain the air filter, engine oil, oil filter, valve clearances, cooling system, drive chain, clutch and suspension linkage according to Triumph's competition service schedule. |
The 2025 Triumph TF450-RC Edition represents a major milestone in the British manufacturer's motorcycle history. Officially unveiled on 3 October 2024, it was Triumph's first purpose-built 450cc motocross motorcycle and followed the introduction of the TF 250-X for the 2024 model year. Developed in close collaboration with seven-time AMA Supercross champion Ricky Carmichael, the new machine combined a competition-focused four-stroke engine with premium suspension, braking and rider-control components. The RC Edition was not simply a graphics package; Carmichael contributed to the motorcycle's development and selected several of its distinctive components.
At the heart of the TF450-RC Edition is a 449.5cc liquid-cooled single-cylinder engine featuring a single overhead camshaft, four valves and a 13.1:1 published compression ratio. A 95 mm bore and 63.4 mm stroke establish its competition-oriented engine configuration. Premium internal components and a compact design were developed to provide strong power delivery while controlling weight and engine dimensions. Electronic fuel injection is managed by an Athena ECU, incorporating a Ricky Carmichael-specific engine calibration intended to combine performance with controllable throttle response.
The five-speed manual gearbox incorporates an electronic quickshifter, allowing clutchless upshifts between second and fifth gears. A hydraulically operated wet multi-plate clutch uses a Belleville spring arrangement, while a Triumph Racing Hinson clutch cover provides a distinctive external feature. Standard electronic rider aids include selectable engine maps, traction control and launch control. Triumph also supplied a Wi-Fi communication module for the MX Tune Pro smartphone application, allowing riders to adjust supported engine-management settings for different track conditions.
Ricky Carmichael's involvement is particularly visible in the motorcycle's equipment and presentation. The RC Edition features ODI Podium Flight RC4 signature handlebars, a gripper seat cover, front brake disc guard and XTrig holeshot device. Its graphics incorporate Carmichael's famous number four, GOAT branding and Triumph Performance Yellow with black and white accents. These details distinguish the motorcycle from conventional production motocross machines and underline its connection with one of the sport's most successful competitors.
The aluminium spine frame and fabricated aluminium swingarm form the foundation of the chassis. Triumph equipped the TF450-RC Edition with 48 mm KYB Air-Oil Separate closed-cartridge coil-spring forks offering 310 mm of front travel. A linkage-operated KYB rear shock provides 305 mm of travel and adjustable high-speed and low-speed compression damping, together with rebound adjustment. This equipment gives riders considerable flexibility when adapting the motorcycle to different circuits, jumps and braking conditions. The MXOwners rear suspension setup and adjustment guide provides general information about rider sag, spring preload and damping adjustments.
Braking equipment includes Brembo hydraulic calipers with a 260 mm front disc and 220 mm rear disc. D.I.D DirtStar aluminium rims support the 21-inch front and 19-inch rear wheels, with tyre sizes of 80/100-21 and 110/90-19 respectively. Triumph lists a wet weight of 108.6 kg, a 960 mm seat height and a 7-litre fuel tank. The combination of premium chassis components and carefully selected racing equipment reflects Triumph's intention to compete directly with established manufacturers in the demanding 450cc motocross category.
For owners, correct maintenance is an essential part of operating a competition four-stroke. Triumph's factory handbook specifies engine oil refill quantities of 1.05 litres without replacing the filter and 1.15 litres when replacing it. The cooling system holds 2.4 litres of specified premixed coolant. Air-filter cleaning, valve-clearance inspections, engine oil changes and suspension servicing should follow the factory competition maintenance schedule. Owners researching compatible maintenance components can consult the MXOwners motorcycle parts finder, while the fork oil and suspension reference guide provides additional general information about suspension servicing.
The TF450-RC Edition established Triumph's presence in the modern 450cc motocross market and introduced a new competition engine and chassis platform. Its combination of Ricky Carmichael's development involvement, advanced electronic equipment, premium KYB suspension and purpose-built four-stroke engineering made the 2025 model a historically important addition to Triumph's motorcycle range. It also provided the foundation for the subsequent TF450-X production motocross model, extending Triumph's ambitions in international off-road competition.