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.
2019 HONDA CRF450L DUAL-SPORT: FIRST RIDE - Dirt Bike Magazine
2024 Beta 450 RX - Moto-Related - Motocross Forums / Message Boards - Vital MX
Carlen Gardner Videos, Photos & News - Racer X
SuperMotocross News, Videos, Highlights & Interviews - Racer X
Proride member group
BETA 450RX MOTOCROSSER - Dirt Bike Magazine
Beta 450 RX Motocross Bike to Hit USA Dealerships in December - Racer X
2024 Beta 450 RX TESTED (NEW Motocross Model)
New 2024 Beta 450 RX Specs and Price - Cycle News
New Beta 450 RX Wants To Dominate The Four-Stroke MX Scene
MXA'S WEEKEND NEWS ROUND-UP: CHAD IS BACK, SUPERCROSS' GAMBLE & MXGP TROUBLES - Motocross Action Magazine