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KTM 125 SX

KTM · 25 model years · 1999-2027 All KTM models →

The KTM 125 SX is KTM's 125cc two-stroke motocross bike, a popular choice for young racers moving up to full-size bikes. It uses a liquid-cooled 125cc two-stroke single with a light, agile chassis and WP suspension.

Updates over the years brought new frames and engines, and throttle-body fuel injection arrived for 2023. It is a closed-course competition machine. Rivals include the Yamaha YZ125, Husqvarna TC 125 and GasGas MC 125.

YearPhotoEnginePower WeightSeatFields
2027 2027 KTM 125 SX 124.8 cc 15 hp 92 kg 958 mm 38
2026 2026 KTM 125 SX 124.8 cc 15 hp 92 kg 958 mm 38
2025 2025 KTM 125 SX 124.8 cc 15 hp 92 kg 958 mm 39
2023 2023 KTM 125 SX 124.8 cc 15 hp 92 kg 958 mm 39
2022 2022 KTM 125 SX 124.8 cc 15 hp 88 kg 950 mm 39
2021 2021 KTM 125 SX 124.8 cc 15 hp 88 kg 950 mm 39
2020 2020 KTM 125 SX 124.8 cc 15 hp 88 kg 950 mm 39
2019 2019 KTM 125 SX 124.8 cc 15 hp 88 kg 950 mm 39
2018 2018 KTM 125 SX 124.8 cc 15 hp 87 kg 960 mm 39
2017 2017 KTM 125 SX 124.8 cc 15 hp 87 kg 960 mm 39
2016 2016 KTM 125 SX 124.8 cc 15 hp 88 kg 960 mm 36
2015 2015 KTM 125 SX 124.8 cc 15 hp 91 kg 992 mm 39
2014 2014 KTM 125 SX 124.8 cc 15 hp 91 kg 992 mm 39
2013 2013 KTM 125 SX 124.8 cc 15 hp 91 kg 992 mm 39
2012 2012 KTM 125 SX 124.8 cc 15 hp 92 kg 992 mm 39
2011 2011 KTM 125 SX 124.8 cc 15 hp 89 kg 992 mm 39
2010 2010 KTM 125 SX 124.8 cc 15 hp 91 kg 985 mm 39
2009 2009 KTM 125 SX 124.8 cc 15 hp 91 kg 985 mm 39
2008 2008 KTM 125 SX 124.8 cc 15 hp 91 kg 960 mm 38
2007 2007 KTM 125 SX 124.8 cc 15 hp 92 kg 925 mm 38
2006 2006 KTM 125 SX 124.8 cc 15 hp 92 kg 925 mm 38
2005 2005 KTM 125 SX 124.8 cc 15 hp 92 kg 925 mm 38
2004 2004 KTM 125 SX 124.8 cc 15 hp 94 kg 925 mm 39
2003 2003 KTM 125 SX 124.8 cc 15 hp 94 kg 925 mm 38
1999 1999 KTM 125 SX 125 cc 15 hp 91 kg 925 mm 38