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Overview:
Beta’s prototype testing has been going on for more than 4 years and the manufacturer from Florence, Italy is ready to release the production model to the masses, the wait is over for the all-new 2024 450 RX Motocross model!
Beta has kept no secrets in their desire to chase the world of motocross, with the early USA introduction of the 300 RX 2 stroke model in 2021 about the same time as the first shots were taken of the prototype 450 RX 4 stroke model racing in the MXGP championship. It is officially the first four-stroke motocross bike built by Beta, the 450 RX model was designed to carry on the Beta tradition of Rideability. To offer a ride that is more forgiving while still providing performance that will encourage aggressive riding.
The design is completely new from the ground up. Frame, engine and all other components are of the highest level of performance and lightness. Beta motorcycles are hand built in Florence, Italy and have been for more than 115 years. The team of engineers are every-day riders and understand the values that a motocross rider is looking for.
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Features: MX chassis and frame, aluminum sub-frame, sleek rear fender and side panels, KYB 48mm front forks and 50mm rear shock, Maxxis tires, five speed transmission, wet diaphragm style clutch, blue anodized Excel rims, red anodized dual material rear sprocket, extra wide machined aluminum footpegs with stainless steel pins, and included customized bike stand and four different throttle pulleys to customize throttle response.
All new engine designed specifically for motocross use. Counter balanced to smooth out vibration. Five speed transmission with dedicated ratios to MX. Diaphragm style clutch with three adjustments that allows rider to select their desired feel.
New air filter box, combined with 46mm throttle body, provides the optimum air flow to keep up with the performance of the new engine
A precise chassis was designed specifically for motocross. The frame was engineered to handle repeated landings yet supple enough for great cornering.
KYB 48mm forks up front & 50mm piston in rear
Both components are completely adjustable in compression, rebound, and spring preload representing an ideal compromise between Rideability & Performance
Fuel Tank designed for MX. 1.8 gallon capacity
21" Front/19" Rear with 90/100-21 & 110/90-19 Maxxis Tires
Nissin floating calipers
260mm disc front
240mm disc rear
| MODEL | 450 RX |
| ENGINE TYPE | Single cylinder, 4 -stroke, liquid cooled, 4-valve with electric start. |
| BORE | 97mm |
| STROKE | 60.8mm |
| DISPLACEMENT | 449.3cc |
| COMPRESSION RATIO | 13.4:1 |
| VALVE TRAIN | Finger followers w/ shim adjustment |
| IGNITION | Dual-Map Kokusan with Traction Control |
| SPARK PLUG | NGK LKAR8A-9 |
| LUBRICATION | Twin Oil Pumps w/Cartridge Filter & Separate Compartments For Engine & Transmission |
| FUEL SYSTEM | 46mm Throttle Body |
| CLUTCH | Hydraulic, adjustable diaphragm multi-plate clutch |
| TRANSMISSION | 5 Speed |
| FINAL DRIVE | DID drive chain |
| FRAME | Molybdenum steel / Double Cradle w/ push button seat and quick air filter access |
| WHEELBASE | 58.4" |
| SEAT HEIGHT | 37.2" |
| GROUND CLEARANCE | 13" |
| FOOTREST HEIGHT | 16.1" |
| DRY WEIGHT | 229 lbs |
| FUEL TANK CAPACITY | 1.8 US Gallons |
| FRONT SUSPENSION | 48 mm KYB AOS closed cartridge fork, adjustable compression & rebound |
| REAR SUSPENSION | KYB 50mm body with adjustable rebound and high/low speed on compression adjustment |
| FRONT WHEEL TRAVEL | 12" |
| REAR WHEEL TRAVEL | 11.8" |
| FRONT BRAKE | 260 mm floating rotor |
| REAR BRAKE | 240 mm rotor |
| FRONT/REAR RIM | 21" (Front) 19" (Rear) |
| FRONT/REAR TIRE | Maxxis |
| SPECS | *Specifications subject to change without notice Additional information |
