Quick Analysis
KTM 50 SX
10.0 pts
Unweighted: 5 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
TRIUMPH NEW SPEED T4
28.0 pts
Unweighted: 19 advantages
EnginePerformanceDimensionsBrakesTyresFeaturesOther
| Specification | ||
|---|---|---|
Engine Specifications |
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| Cooling System | — | Liquid-cooled |
| Displacement | 49.9 cc | 398.15 cc |
| Engine Type | 1-cylinder, 2-stroke engine | 4 valve, DOHC, single-cylinder |
| Power | 5.3 bhp @ 11500 rpm | 31 PS / 30.6 bhp (22.8 kW) @ 7,000 rpm |
| Torque | 5.2 Nm @ 7500 rpm | 36 Nm @ 5,000 rpm |
Performance & Efficiency |
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| Fuel Tank Capacity | 2.3 L | 13 l |
| Mileage | 30 kmpl | 29 l |
Dimensions & Weight |
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| Kerb Weight | 41 kg | 180 kg |
| Seat Height | 653 mm | 806 mm |
Brakes & Suspension |
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| ABS | — | Bosch dual-channel ABS |
| Front Brake | Disc 160 mm | 300 mm fixed two-piston floating caliper, dual-channel ABS |
| Front Suspension | XACT 35 WP Upside-Down fork, Ø 35 mm | 43mm Telescopic Fork. 140mm wheel travel |
| Rear Brake | Disc 160 mm | 230mm fixed disc, floating caliper, ABS |
| Rear Suspension | XACT WP mono shock | Gas monoshock RSU with external reservoir and pre-load adjustment. 120mm wheel travel |
Tyres & Wheels |
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| Front Tyre | 60/100 - 12 | 110/70-17 |
| Rear Tyre | 2.75 - 10 | 140/70-17 |
| Tyre Type | Tubed | Tubeless |
| Wheel Type | Spoke | Alloy |
Features & Technology |
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| Headlight | — | DRLs LED |
Other Specifications |
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| Bike Image 1 | — | https://motoautiv.com/wp-content/uploads/2025/10/TVS-M1-S-1.webp |
| Bike Image 2 | — | https://motoautiv.com/wp-content/uploads/2025/10/TVS-M1-S-4.webp |
| Bike Image 3 | — | https://motoautiv.com/wp-content/uploads/2025/10/TVS-M1-S-2.webp |
| Color Options | Electronic Orange | Baja Orange Phantom Black / Pearl Metallic White Phantom Black / Storm Grey Caspian Blue / Pearl Metallic White Lava Red Gloss / Pearl Metallic White |
| Cons | High Maintenance: As a 2-stroke engine, it requires frequent servicing and tuning. Small Fuel Tank: Limited capacity means more frequent refills. Kick-Start Only: No electric start, which can be tricky for very young riders. Limited Power for Older Kids: The 50cc engine may not be enough as the rider grows or becomes more skilled. Sensitive to Tuning: Owners report issues like fouling spark plugs or needing to frequently re-jet the carb: “Used to run great … then started fowling plugs … Moved to a 95 main jet … About 15 kph slower …” Parts Cost & Availability: As a race‑oriented bike, some parts can be expensive or harder to source for older models. | Reduced power & premium components: Compared to the Speed 400, the T4 lacks some features — no ride-by-wire throttle, no traction control, conventional telescopic forks instead of USD forks, and non-radial tyres. Performance compromises: With only 31 PS and 36 Nm, it is less punchy than competitors in the 400cc segment and may feel less exciting when pushed hard. Braking and suspension feedback: Some owners report the front suspension is a bit soft, and the braking or tyres do not inspire full confidence at higher speeds. Premium brand servicing & running cost: While upfront price is competitive, service/parts cost and the premium brand network may still imply higher ongoing costs than mass-segment brands. Weight & urban manoeuvrability concerns: Though seat height is moderate, some users feel the bike is a bit heavy for very tight urban U-turns or slow-speed traffic handling. |
| Detailed Overview | The KTM 50 SX is a purpose-built mini motocross bike, tailored primarily for very young and beginner racers who want to get a genuine motocross experience without jumping straight to bigger bikes. It’s more than just a “toy” — KTM has packed serious race-bike DNA into this 50cc model, making it a standout choice for youth motocross training and competitive racing. At the heart of the 50 SX is a 49.9 cc single-cylinder 2-stroke engine, which delivers a punchy yet manageable power output. According to KTM’s specs, this engine is paired with a centrifugal automatic clutch, meaning there’s no manual clutch lever to worry about — the clutch engages automatically, which is ideal for young riders still building coordination and confidence. The engine uses a Seletra 2p D36 system for fuel delivery (on some models), which helps in precise tuning and reliable performance. KTM has thoughtfully designed the chassis for both strength and agility. The frame is made from chromoly steel, which keeps it light but sturdy. The overall design ensures that the bike is highly maneuverable, making it easier for young riders to learn balance and control on a real race-ready structure. The 50 SX isn’t just about motor and frame — it comes with serious suspension too: a WP XACT 35 mm upside-down fork at the front and a WP mono‑shock at the rear.The front suspension travel is around 200 mm and the rear is close to 190 mm, giving enough give for track bumps and jumps. In terms of ergonomics, the seat height is just 653 mm, making it very accessible for younger riders. Ground clearance is around 233 mm, giving the bike enough space to handle uneven terrain without scraping too much.The fuel tank capacity is modest — 2.3 liters — but that’s more than enough for short motocross sessions that young riders typically do. For braking, KTM hasn’t compromised: the 50 SX is equipped with disc brakes both front and rear, each 160 mm in size. This provides good stopping power and control, which is very important for safety and learning advanced braking techniques. On the wheels front, the bike uses spoke wheels, keeping things light and rugged for off-road racing. Despite its small size, the 50 SX is very race-focused. The frame has been redesigned to mimic the flex and rigidity characteristics of full-size MX bikes. The new frame also comes with frame protectors, which help reduce damage in case of falls — a common occurrence when young riders are learning. The handlebars are lightweight aluminum, with a bend that suits smaller riders, and the footpegs are designed to give a solid grip even when things get muddy or rough. KTM also includes power-reduction kits in its parts catalog for the 50 SX. These kits let parents or coaches limit the power output while the rider is still learning, which is a smart way to scale the bike’s performance to the rider’s ability — and once they’re better, the full power can be unlocked. When it comes to reliability, the 50 SX has a liquid cooling system for better thermal management. The engine’s central crankshaft design helps in keeping the mass well-balanced, which contributes to smoother handling. As for maintenance, like all 2-stroke motorcycles, it does need regular care — but KTM has made key parts (like the clutch) durable, using a reinforced clutch basket for longevity. Overall, the KTM 50 SX is a very well-engineered youth motocross bike that brings real race performance to younger riders. It balances power, weight, and control in a way that helps beginners grow into serious racers. Whether for track training, competitive racing, or just building early riding skills, it’s absolutely one of the top choices in the mini-moto world. | The Speed T4 is the entry-point in the made-in-India 400 cc series from Triumph, built in collaboration with Bajaj Auto. It carries forward Triumph’s modern-classic styling but tuned to a more accessible price point and relaxed ride character. According to official specs, it uses a 398.15 cc, liquid-cooled, single-cylinder DOHC engine that delivers 31 PS @ 7,000 rpm and 36 Nm @ 5,000 rpm. The engine is tuned for better low and mid-range rideability, especially targeted at Indian usage. On the chassis and hardware side: it sits on 17″ alloy wheels front & rear, has 300 mm front / 230 mm rear disc brakes with dual‐channel ABS, a conventional 43 mm telescopic front fork (instead of USD) and a monoshock rear with preload adjustment. Seat height is around 806 mm and wet weight approx 180 kg. Tank capacity is 13 litres. In terms of pricing and value: Originally launched at ₹2.17 lakh (ex‐showroom) in India. Later price revisions lowered it to about ₹1.99 lakh in some cases. Colour options have also been updated with refreshed graphics and finishes. What it does well Affordability & brand access: As Triumph’s most affordable offering in India it opens the brand to a wider audience, giving the neo‐classic premium styling at a relatively accessible price. Beautiful styling & premium finish: Despite the lower cost, it retains the trademark Triumph look—sculpted fuel tank, minimalist modern‐classic silhouette, premium paint and detailing. Good low/mid-range usability: With the engine tuned for torque from low revs (claims like ~85% of peak torque available from ~2,500 rpm) it suits city use well, fewer gear shifts and smoother ride in traffic. Manageable ergonomics: Seat height at ~806 mm is relatively accessible compared to tall scramblers or adventure bikes, making it more friendly for many riders. Modern tech & spec for segment: Features like LED lighting, slipper clutch, dual‐channel ABS, decent chassis hardware give a respectable package for a 400cc neo‐classic. Where it compromises / trade-offs Reduced power & simpler hardware vs bigger siblings: Compared to its sibling (Speed 400) this model has less power (~31 PS vs 40 PS in Speed 400) and simpler suspension/brake/tyre hardware (telescopic fork instead of USD, non‐radial tyres in some cases). Performance may feel modest at higher revs: Some rider feedback notes that while the bike is very usable up to mid speeds, it may lack the punch and high‐end refinement rivals offer. For instance: “the bike feels strained after 6500 rpm … its best to ride between 2000 and 5500.” Premium brand costs & running‐cost expectations: Even though it is the “entry” Triumph, service/parts/maintenance may still cost more than mass market brands. Tank & range limitations: With only 13 litres tank capacity and a 400cc engine tuned for torque, long highway runs may require more frequent fuel stops or careful planning. Some features missing: For instance there is no traction control, ride-by-wire throttle (in T4) which the more expensive sibling offers. These are sacrifices made to hit the price point. In summary The Triumph Speed T4 is a compelling offering if you’re looking for a neo-classic motorcycle that offers strong styling, decent brand cachet, good city usability and manageable ergonomics, all at a price that (in premium bike terms) is relatively accessible. It nails the look, brand tone and day‐to‐day rideability. That said, if your priority is maximum performance, off‐road or weekend sporty riding, or you want the highest spec hardware (suspension, tyres, advanced features), then you may find the T4 is a “good all‐rounder” rather than a “top‐end performance” machine. In that case, consider stretching to siblings/higher models or different bikes. |
| Expert Review | MotoAutiv Team | MotoAutiv Team |
| FAQ (Manual Override) | Q: What is the engine capacity of the KTM 50 SX? A: It has a 49.9 cc 2-stroke engine. Q: What kind of transmission does it use? A: The KTM 50 SX has a single-speed automatic transmission. Q: How is the KTM 50 SX started? A: It uses a kick-start. Q: Does it have a clutch? A: Yes — a centrifugal (adjustable) clutch, so the rider doesn’t have to use a manual clutch lever. Q: What is the fuel tank capacity? A: The fuel tank capacity is 2.3 litres. Q: What is the seat height? A: The seat height is 653 mm. Q: What is the weight of the bike? A: The dry (or “without fuel”) weight is about 43.5 kg for recent models. Q: What kind of suspension does the KTM 50 SX use? A: It comes with WP XACT suspension — a 35 mm upside-down fork in the front and a WP mono-shock at the rear. Q: What brakes does it have? A: It has disc brakes both at the front and rear, each 160 mm. Q: What power does the KTM 50 SX produce? A: The KTM 50 SX produces around 5.3–5.4 PS at ~11,500 rpm. Q: Is the KTM 50 SX road legal? A: No — it's designed for off-road / motocross use, not for street-legal riding. Q: What kind of clutch does it have for young riders? A: It uses a centrifugal clutch, which automatically engages at high RPM — good for beginners or young riders who don’t manually operate a clutch. Q: What is the ground clearance? A: The ground clearance is 233 mm. Q: Is there a guarantee or warranty for KTM 50 SX? A: According to specs, it has a 2-year standard warranty. Q: What is the typical maintenance challenge or issue to watch for? A: Some owners report carburetor tuning issues | Q: What is the engine capacity of the Triumph Speed T4? A: The Triumph Speed T4 is powered by a 398 cc, liquid-cooled, single-cylinder engine. Q: How much power does the Triumph Speed T4 produce? A: The engine delivers 31 PS of power and 36 Nm of peak torque, tuned for strong mid-range performance. Q: What is the mileage of the Triumph Speed T4? A: The Speed T4 offers an approximate mileage of 30–35 km/l under mixed riding conditions. Q: What is the seat height of the Triumph Speed T4? A: The seat height is around 806 mm, making it accessible for most riders. Q: Does the Triumph Speed T4 come with traction control? A: No, the Speed T4 does not feature traction control, unlike the Speed 400. Q: What type of suspension does the Triumph Speed T4 use? A: It comes with a telescopic front fork and a monoshock at the rear, tuned for comfort and city riding. Q: What is the top speed of the Triumph Speed T4? A: The Speed T4 can achieve a top speed of around 140–145 km/h. Q: What is the price of the Triumph Speed T4 in India? A: The Triumph Speed T4 is priced at approximately ₹2.17 lakh (ex-showroom, India), making it the most affordable Triumph bike in the lineup. |
| Price Variants | | 475000 | Standard | 192539 |
| Pros | Very Lightweight: Makes it easy for young riders to handle and build confidence. Automatic Transmission: The centrifugal clutch and automatic gearbox simplify riding for beginners. Adjustable Suspension: High-quality WP fork and shock can be tuned to rider weight and track conditions. Racing‑Oriented Build: Frame and components are derived from KTM’s full-size SX range, giving a race-ready feel. Power-Reduction Kits Available: Helps beginners by limiting power until they’re ready for more. Good Cooling: Liquid cooling ensures the engine stays healthy even under hard off‑road use. Tool-Free Adjustability: Seat height, suspension, and other parts can be adjusted without special tools. | Excellent value for money: The Speed T4 is the most affordable bike from Triumph in India — launched at around ₹ 2.17 lakh ex-showroom. Strong mid-range rideability: While its peak power is lower than its siblings (31 PS / 36 Nm) it is tuned for low to mid-range torque, making it more usable in urban traffic and fewer gear shifts. Signature styling & robust build: It uses the same 398 cc single-cylinder engine as the Speed 400, and retains neo-retro Triumph styling cues which offer premium appeal in this price-segment. Good feature set for the price: You get dual-channel ABS, all-LED lighting, a six-speed gearbox with slipper clutch, and a USB port among other features. More accessible seat height and manageable ergonomics: It has a seat height of about 806mm (vs premium models often taller) and is reasonable for many riders. |
| Transmission | Manual | 6 Speed Manual |
