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KTM 50 SX
The KTM 50 SX is a purpose-built mini motocross bike designed for young riders and beginners stepping into competitive off-road riding. It stands out for its lightweight build and easy-to-use automatic transmission, making it highly approachable for kids. The race-inspired chassis and WP suspension ensure it still delivers serious track capability. The overall package feels focused and confidence-building. That said, it’s strictly track-only and requires supervision and maintenance. Overall, the KTM 50 SX makes the most sense for young riders looking to build skills in motocross from an early stage.
KTM 50 SX Latest Update
Last Updated on 15th Nov'24: The KTM 50 SX has been around globally since 2008, and it has finally made it onto Indian shores. With the launch of its new dirtbike lineup, KTM plans to build the Indian motocross and dirtbike ecosystem, along with developing a racing program for budding dirtbike racers.
EMI ₹ 8,978 /mo
50 SX Highlights
A beginner-friendly motocross bike built for young riders who want a lightweight, easy-to-ride machine with real race-ready hardware.
Lightweight construction makes it easy to handle, an automatic clutch simplifies riding, a race-derived chassis and WP suspension, and adjustable ergonomics to suit growing riders
Read moreStrictly off-road use only, no road legality, limited power as riders progress, requires regular maintenance typical of motocross bikes, needs adult supervision and proper riding environment
Read moreKTM 50 SX Price
KTM 50 SX Specs & Features
Expert Verdict on 50 SX
91Wheels Expert
Pros & Cons of 50 SX
What we admire in this bike
Extremely lightweight improves control and agility
49.9cc 2-stroke engine is responsive for beginners
Automatic clutch removes complexity for new riders
Premium suspension setup for this segment
What could have been better
Not suitable for everyday or road use
Outgrown quickly as rider skill improves
Limited comfort and practicality outside track use
KTM 50 SX Detailed Review
- The 50 SX is the smallest of KTM’s ‘sportminis’ made for children.. However, with its knobby tyres and typical dirtbike stance, it still looks purposeful and ready to take on anything.
- The seat line of the current-gen 50 SX has been kept flatter than the previous-gen motorcycle, and the side panels have also been made slimmer to make it easier for young riders when standing on the footpegs.
- Along with the new frame, the 50 SX also comes with an updated fuel tank featuring a new shape and design.
50 SX body specifications:
| Ground Clearance | 233 mm |

- The single-cylinder, 49.9cc two-stroke engine redlines at 11500rpm, producing 5.3bhp and 5.2Nm of torque.
- KTM is also offering its PowerParts catalog with a choice of two power-reduction kits; the first being an entry-level reduction to 3.9bhp, and the second one allowing mid-level riders to unleash 7.8bhp.
- The multi-disc clutch can be adjusted to suit rider needs without needing special tools, and there is also a reinforced clutch basket with improved durability and consistent performance.
- It features a new airbox concept; a conventional suction sleeve made from a hard-wearing polyamide and a twin air filter mounting system placed under the seat.
50 SX engine specifications:
| Transmission | Manual |
| Engine | 49.9 cc |
- The 50 SX is built on a new high-strength steel frame with forged connecting parts integrated into the frame. This allows the suspension, handlebars, bodywork, and the sub-frame to be adjustable for height.
- The 50 SX’s steel frame makes use of 35mm XACT USD forks with 205mm of travel, and the air unit can be easily adjusted using an air pump. At the rear, a fully-adjustable WP XACT monoshock is now mounted differently on the frame.
- A high-quality, black handlebar made out of lightweight aluminium alloy has been used here, and it ensures enhanced stability and vibration damping.
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KTM 50 SX Competitors
| Models | Engine | Power | Torque | Mileage | Kerb weight | Seat height | Compare |
|---|---|---|---|---|---|---|---|
![]() ₹4.75 Lakh* | 50 cc | - | - | - | 43 kg | 653 mm | |
| 112 cc | 24 bhp | 15.7 Nm | 24.18 kmpl | 77 kg | 870 mm | 50 SX vs KX112 | |
| 144 cc | 11.1 bhp @ 8000 rpm | 12 Nm @ 6000 rpm | - | 99 kg | 860 mm | 50 SX vs KLX 140R F | |
| 84 cc | 22 bhp | 14 Nm | - | 74.6 kg | 830 mm | 50 SX vs KX 85 | |
| 889 cc | - | - | - | 53.5 kg | 730 mm | 50 SX vs 65 SX | |
| 420 cc | 48 bhp @ 8750 rpm | 43 Nm @ 6750 rpm | 26 kmpl | 165 kg | 845 mm | 50 SX vs F 450 GS | |
| 398.7 cc | 44.37 bhp | 39 Nm | - | 159 kg | 890 mm | 50 SX vs 390 Enduro R | |
| 457 cc | 46.93 bhp @ 9400 rpm | 43.5 Nm @ 6700 rpm | 30 kmpl | - | 800 mm | 50 SX vs RS 457 | |
| 648 cc | 46.3 bhp @ 7250 rpm | 52.3 Nm @ 5650 rpm | - | 241 kg | 740 mm | 50 SX vs Super Meteor 650 | |
| 298 cc | 29.09 bhp @ 8500 rpm | 26.5 Nm @ 6500 rpm | 37.03 kmpl | - | 690 mm | 50 SX vs V302C | |
| 648 cc | 46.39 bhp @ 7250 rpm | 52.3 Nm @ 5650 rpm | 22 kmpl | 240 kg | 795 mm | 50 SX vs Shotgun 650 |
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