KTM MACINA RACE SX 20Beating Benchmarks With E Power The name RACE SX represents the hardtail models in KTMs Light E Bike range These bikes feature a lightweight aluminium frame with a compactly integrated motor bracket unit. In summary, the Race SX models are the perfect bikes for entry level sport oriented e MTB riders Their low overall weight ensures optimal handling on any terrain The Macina SX product line complements KTM's established e bike range, revolutionising