2015 Beta Alp 4.0

The chrome-moly framed enduro bikes (with 250, 400, 450, 525 RFS motors) came equipped with Nissin brakes and rotors, Marzocchi forks, and a Sachs rear shock.

They launched a range of enduro motorcycles using KTM engines.

The RR models were upgraded with a removable clutch sub-cover, upgraded front fork settings, and a redesigned rear swing arm. 2008 introduced the RS models built for the American market.

They launched the new RR series, with a new engine made in-house. Beta motorcycles have been used by world trials champions such as Jordi Tarrés, Dougie Lampkin, Albert Cabestany and Enduro riders Steve Holcombe and Brad Freeman. In-house designed, carbureted motors appeared in their enduro bike line. All 400 cc, 450 cc and 520 cc (actually 498cc) four-strokes have DOHC, separate engine and transmission lubricants, Nissin brakes, Brembo hydraulic clutches, Excel Takasago rims and six-speed gear boxes.

All bikes gained the convenient push button electric start. The RS models are rebranded RR-S and gained USFS spark arrestors.

Was expected to be in excess of 20,000 motorcycles, ranging in size from 50 cc to 480 cc. Introduced

Beta revamped their "Perfect Displacement" four-stroke once again. The new motors alter the crank shaft position and add twin fuel injectors allowing implementation of specialized EFI mapping to increase engine performance and mixture control.

Beta introduced the 300 RX motocross bike with a 19" rear wheel and other enhancements geared to the sport of Motocross. They also entered 2021 and 2022 MXGP series with a new 450 RX.

. 2026 the RS dual sport line has an updated frame, X-trig handlebar mounts and exhaust with a removable spark arrestor and now comes with Mitas’ Enduro Trail XT+ tires.