Get shredding youngsters. Motorcycles Motocross DX514473040679906701158 DX1 . A compact chassis and the lowest weight out there is teamed up with a high performance 125 cc 2-stroke engine for a surefire trophy collection. 2017 KTM 125 SX 2017 KTM 125 SX STING LIKE A BEE the whip cracking KTM 125 SX has been at the front for years. With the phenomenal performance on tap it will be there for many more seasons to come...