The Beta motorcycle brand expanded into professional Motocross racing in 2021, joining the MXGP series. The company expanded into the AMA ranks for the 2024 Supercross season and has spent three years racing in America. After racing as a 450 only operation so far, the team may be headed into the 250 ranks. Beta unveiled the brand new 2027 RX 250 on Monday. Here is a list of some of the features of the new machine, detailed by Beta.The Beta RX 250 will mark the brand's official debut in the MX2 class with a 4-stroke. The new RX 250 4T is designed to offer the perfect balance between top-level performance and rideability, thanks to an extremely compact and lightweight engine unit — approximately 1.5 kg lighter than the competition's standard — and advanced racing electronics featuring Quick Shift and Launch Control for maximum effectiveness on the track.Engineering & StyleThe look of the 2027 Beta RX breaks completely with the past, bringing an aggressive red and black livery to the track that blends perfectly with the black-finished frame and tank. Beneath this aesthetic lies an engineering design focused on maximum mass centralization: the engine's incredible compactness and the more tapered lower engine cradle section of the frame not only streamline the bike's profile but also result in lightning-fast handling and responsiveness through the channels and over jumps.Photo: Beta RacingLaunch Control & Quick ShiftThe responsiveness of the new 250cc engine is supported by superior electronic management derived directly from the world of racing. The introduction of Launch Control, adjustable across five levels of intervention, optimizes traction at the starting gate to maximize initial acceleration. The system works in synergy with the all-new Quick Shift, which allows higher gears to be engaged without closing the throttle or using the clutch, ensuring optimal gear-change smoothness and constant forward thrust.Kayaba Suspension With MX2 Specific TuningThe suspension system relies on the KYB front forks and rear shock, already successfully used on the 450, but here equipped with a specific setting developed to adapt to the character and masses of the compact 250 power plant. Contributing to completing the chassis package is a targeted choice on the wheel front as well: the rear rim features a narrower cross-section compared to the other models in the range, with the precise objective of reducing rotating masses, increasing the overall agility of the vehicle and limiting power losses when putting horsepower to the ground.Dual Injection SystemTo maximize engine performance, a sophisticated dual injection system has been introduced. The system features two dedicated injectors: one positioned on the throttle body and one installed directly in the airbox sleeve. This configuration allows for optimal management of the air-fuel mixture, significantly improving response at low revs and ensuring constant power delivery at high revs.Reconfigured DOHC ValvetrainThe all-new 250cc engine features a DOHC timing system with overhead camshafts and a chain positioned on the right-hand side rather than the left, driven by a gear linked to the water pump shaft. The timing system uses a Morse-type chain, equipped with a hydraulic tensioner, to ensure maximum reliability even at the high revs delivered by this modelPhoto: Beta RacingElectric Starter & Lithium BatteryReliable and secure starting on the first attempt in any weather or racing conditions, ensured by the standard electric starter powered by an ultra-lightweight lithium battery.Racing Crankshaft & Connecting RodThe internal architecture of the engine reflects the project's pure racing DNA: the crankshaft features components made from dedicated forged steel and is supported by roller main bearings. The monobloc connecting rod utilizes a bushing at the engine head to best withstand the specific high pressures, whilst the piston adopts a robust box-in-box structure.Handlebar Control & ComfortThe handlebar of the RX 250 is isolated using silent block supports to effectively dampen high-frequency vibrations, reducing arm fatigue during longer riding sessions. For MY27, 5 mm raised handlebar supports have also been adopted to promote a more natural and effective riding position, combined with new grips featuring a softer compound.Dry Summer SystemUnlike its bigger sister, the RX 250's lubrication system employs a dry sump circuit with dedicated return and delivery pumps. The system uses the same oil, suitably filtered, to lubricate both the engine and transmission, an engineering choice designed to optimize space whilst ensuring total efficiency under load.5-Speed Gearbox & Hydraulic ClutchThe engine is mated to a 5-speed gearbox completely redesigned for this displacement, engineered with geometries and thicknesses that reduce weight and bulk without compromising the mechanical strength of the transmission. The clutch control relies on an updated hydraulic unit derived from the RX 450, capable of ensuring smooth and consistent operation race after race.CFD-Optimized CoolingThe engine's thermal efficiency is ensured by a cooling system developed through in-depth computational fluid dynamics (CFD) analysis. This study enabled the optimization of internal fluid flow and overall heat exchange, leading to the adoption on the RX 250 of a closed-type impeller that improves system efficiency and eliminates the need for external piping.Chassis Designed For MX2 CompetitionThe frame has been entirely designed around the specific geometry and stresses of the new 250cc 4-stroke engine. It features a more tapered lower engine cradle section and dedicated side engine head connections. This configuration increases the vehicle's overall torsional rigidity, whilst maintaining the optimal vertical flexibility required for intense Motocross use.AdvertisementAdvertisementThe new machine will be available for the first time later this year, planned to hit showroom floors in September.This story was originally published by Motocross on Jun 15, 2026, where it first appeared in the NEWS section. Add Motocross as a Preferred Source by clicking here.
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