Aprilia SX
2025 Aprilia SX 125 | |
| Manufacturer | Aprilia |
|---|---|
| Parent company | Piaggio |
| Production | Since 2006 |
| Predecessor | Aprilia MX |
| Class | Supermotard |
| Engine | 50–125 cc (3.1–7.6 cu in) Liquid-cooled, single cylinder |
| Transmission | 6-Speed Manual |
| Suspension | Ø40 mm hydraulic fork with leading axle; wheel travel 195 mm Rear: Hydraulic monoshock; Non-adjustable; wheel travel 180 mm |
| Brakes | Front: 300 mm stainless steel disc; floating quad-piston caliper Rear: 180 mm stainless steel disc; twin-piston caliper |
| Tires | Front: 100/80-17 Rear: 130/70-17 |
| Wheelbase | 55.354 in (1,406 mm) |
| Dimensions | L: 79.68 in (2,024 mm) W: 80.511 in (2,045 mm) H: 32.677 in (830 mm) |
The Aprilia SX is a street motorcycle sold by Aprilia since 2006. It is currently sold only in the 125 cc (7.6 cu in) four-stroke variant.
Aprilia SX 50
The SX 50 is powered by a single-cylinder two-stroke engine with a nikasil-lined cast-iron cylinder manufactured by Derbi.
Engine

The Aprilia SX 50 engine is sourced from Derbi/Piaggio. This engine was used in the Derbi Senda DRD/X-Race/X-Treme supermotos, as well as the Derbi GPR 50 and Aprilia RS 50 road bikes. Engine parts from the bikes supermoto can be directly swapped with one another, there are some small differences between the road bike and supermoto engine which ceases the transfer of some external engine parts (exhaust, airbox).
Aprilia SX 125
The SX 125 was initially sold from 2007 until 2013. It was very similar to the SXV 450 and used the iconic Rotax 122 two-stroke engine. The SX 125 was reintroduced in 2018 though with a four-stroke engine instead of a two-stroke to respect the European emissions standards.
References
- "SX 50 Technical sheet". Aprilia. Archived from the original on 3 May 2014. Retrieved 18 September 2018.
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