Top 10 Fastest GasGas Motorcycles Ranked by Top Speed
TL;DR
- The fastest GasGas motorcycle is the SM 700 supermoto, with a top speed of approximately 105 mph on 17-inch street tires and a 74 hp (claimed) 692.7cc LC4 engine.
- The ES 700 dual sport shares the same engine platform and hits a similar top end of 105 mph, making both street-legal 700s the only GasGas models with reliable speed figures.
- Off-road competition models (MC, EC, EX) have no manufacturer-published top speeds; estimates here are based on published rear-wheel horsepower, gearing calculations, and rider-reported GPS data.
- The MC 450F Factory Edition puts out 57.4 hp at the rear wheel — the highest dyno figure of any competition GasGas model tested.
- Speed on a dirt bike is almost beside the point: the fastest GasGas for your use depends on terrain, not a top-end number.
How Fast GasGas Motorcycles Really Are (And How We Ranked Them)
GasGas operates under the Pierer Mobility umbrella alongside KTM and Husqvarna, sharing platform DNA across most of the lineup. The SM 700 and ES 700 are the only models with credible third-party speed data — both run the KTM LC4 engine and have been dynoed by Cycle World; aggregator Motoplanete cross-references that platform data at approximately 105 mph. Every other GasGas is an off-road competition machine geared for a track or trail, not a top-speed run. No manufacturer publishes top speed for these bikes, and no major publication runs GPS top-speed tests on them. Speeds for competition models below are estimates based on published rear-wheel horsepower, stock gearing ratios, and rider GPS data from forums. They are labeled accordingly.
Top 10 Fastest GasGas Motorcycles: Quick Rankings
| Rank | Model | Engine | Est. Top Speed | HP (RW or Claimed) |
|---|---|---|---|---|
| 1 | SM 700 | 692.7cc 4T single | ~105 mph | 66.4 hp (Cycle World dyno, 2023) |
| 2 | ES 700 | 692.7cc 4T single | ~105 mph | 74 hp claimed |
| 3 | MC 450F Factory Edition | 449cc 4T single | ~80–85 mph (est.) | 57.4 hp (Dirt Rider dyno, 2025) |
| 4 | MC 450F | 449cc 4T single | ~78–83 mph (est.) | 52.9 hp (Dirt Rider dyno, 2025) |
| 5 | MC 350F | 349cc 4T single | ~75–80 mph (est.) | 58 hp (claimed at crank) |
| 6 | EC 300 / EC 300 GP | 293cc 2T single | ~75–84 mph (est.) | ~50 hp (claimed) |
| 7 | EX 300 | 293cc 2T single | ~74–82 mph (est.) | ~50 hp (claimed) |
| 8 | MC 250F | 250cc 4T single | ~72–78 mph (est.) | 41.9 hp (Dirt Rider dyno, 2024) |
| 9 | EC 250 | 249cc 2T single | ~70–78 mph (est.) | ~43 hp (Dirt Rider dyno, 2024) |
| 10 | MC 125 | 125cc 2T single | ~65–72 mph (est.) | ~25–27 hp (estimated) |
1. GasGas SM 700 — Fastest GasGas on the Street
The SM 700 is the fastest production GasGas ever built. It runs the KTM-derived LC4 engine — a 692.7cc liquid-cooled SOHC single — tuned to a claimed 74 hp at 8,000 rpm and 73.5 Nm of torque at 6,500 rpm. On Cycle World’s in-house Dynojet 250i dynamometer, the 2023 SM 700 produced 66.4 hp at 7,600 rpm and 48.7 lb-ft of torque — figures consistent with the KTM 690 SMC R platform it shares (Cycle World, 2023). On 17-inch Continental ContiAttack SM EVO street tires with long sixth-gear gearing, riders can expect a real-world top end in the 100–105 mph range.
The LC4’s broad torque curve does the work. It pulls hard from 3,000 rpm, builds through the midrange, and revs to around 9,000 rpm. Dual counterbalancers tame vibration enough that sustained highway speeds are comfortable. A Brembo Monoblock four-piston caliper handles stopping duties.
Specs (2025 SM 700): 692.7cc SOHC liquid-cooled single | 74 hp (claimed) | 6-speed | Wet weight: ~349 lb | MSRP: ~$10,499
2. GasGas ES 700 — Near-Identical Top End in Dual-Sport Form
The ES 700 shares every major mechanical component with the SM 700 — same 692.7cc LC4 engine, same 74 hp claimed output, same six-speed gearbox. The difference is the wheel package: 21-inch front and 18-inch rear wire-spoke wheels with dual-sport tires instead of 17-inch street rubber. That taller wheel/tire combo, combined with enduro-tuned WP XPLOR suspension and slightly different gearing, means the ES 700 lands at approximately the same 105 mph top end in ideal conditions but gets there in a slightly different way. An Adventure Rider tester noted that sustained speeds above 75 mph bring some vibration through the bars, but the motor still pulls cleanly in sixth gear at highway pace (ADV Rider, 2024).
For riders who want a fast, street-legal GasGas that can also handle fire roads and singletrack, the ES 700 is the pick. At around 325 lbs dry and with WP XPLOR suspension tuned for off-road use, it commits far less to pavement-only riding than the SM 700.
Specs (2024 ES 700): 692.7cc SOHC liquid-cooled single | 74 hp (claimed) | 6-speed | MSRP: ~$10,499
3. GasGas MC 450F Factory Edition — Fastest Competition GasGas
The MC 450F Factory Edition is the most powerful competition GasGas ever sent to a dealer. Dirt Rider’s 2025 dyno test returned 57.4 hp at the rear wheel — the highest figure they’d recorded for any closed-course dirt bike tested that model year (Dirt Rider, 2025). The engine is a 449cc SOHC liquid-cooled single with a 44mm Keihin throttle body, and the Factory Edition adds an FMF Factory 4.1 RCT titanium slip-on that noticeably extends the power curve over the stock exhaust. With a stock 13/51 sprocket setup geared for a motocross track, most estimates put the theoretical top end at 80–85 mph on a long straight. You’ll never need it; motocross tracks top out at far lower speeds.
The 2025 Factory Edition adds an FMF Factory 4.1 RCT titanium exhaust, ProTaper handlebars, Factory Racing wheels, and the GasGas+ Connectivity Unit for engine mapping. At $12,599, it’s the priciest GasGas competition bike — but the power advantage over the standard MC 450F is real and measurable on a dyno.
Specs: 449cc SOHC 4T | 57.4 hp (Dirt Rider dyno, rear wheel, 2025) | 5-speed | MSRP: $12,599
4. GasGas MC 450F — The Accessible 450
The standard MC 450F is the same engine in a slightly softer state of tune. Dirt Rider’s 2025 dyno test recorded 52.9 hp at the rear wheel — fractionally less than both the KTM 450 SX-F (53.2 hp) and Husqvarna FC 450 (53.0 hp) at peak, though it leads the class in maximum torque at 33.5 lb-ft (Dirt Rider, 2025). Without the map switch, launch control, or traction control of its Austrian siblings, the MC 450F delivers power in a mellow, progressive way that many recreational and vet riders actually prefer. Top speed is estimated at 78–83 mph on standard gearing. At $10,499 for the 2026 model, the MC 450F is $900 less than the Husqvarna FC 450 and $1,150 less than the KTM 450 SX-F (Dirt Rider, 2025).
5. GasGas MC 350F — The Underrated All-Rounder
The MC 350F is GasGas’s 349cc crossover machine — less weight than a 450, more torque than a 250. GasGas claims 58 hp at 13,400 rpm from the DOHC motor; real-world rear-wheel figures are likely in the 48–52 hp range after drivetrain loss, consistent with the KTM 350 SX-F platform it shares. On stock 13/50 gearing, top speed estimates sit around 75–80 mph.
6. GasGas EC 300 / EC 300 GP — Two-Stroke Speed From the Enduro Side
The EC 300’s 293cc liquid-cooled two-stroke received throttle body injection and a new frame for 2024. With six-speed enduro-specific gearing and approximately 50 hp, forum GPS data puts top end around 80–84 mph on stock gearing (GasGas Rider Forum, archived data). The EC 300 GP adds a Map Select Switch, semi-floating front disc, radiator fan, and Dunlop AT82 tires at $11,299 MSRP (Cycle News, 2024). Neither has a manufacturer-published top speed.
7. GasGas EX 300 — Cross-Country Two-Stroke
The EX 300 runs the same 293cc two-stroke as the EC 300, paired with a cross-country six-speed transmission with ratios suited for mixed trail and fire-road use. Top speed estimates land at 74–82 mph depending on sprocket setup. The 2026 EX 300 is the only GasGas competition model shipping as a standalone 2026 dealership arrival (GasGas, 2025).
8. GasGas MC 250F — High-Revving Quarter-Liter
The MC 250F’s 250cc DOHC four-stroke spins to a 14,000 rpm redline and put out 41.9 hp at the rear wheel in Dirt Rider’s 2024 dyno test. Stock 13/52 gearing limits top speed to approximately 72–78 mph. At $9,099 for the 2026 model (Dirt Rider, 2025), it’s the most affordable full-size GasGas four-stroke.
9. GasGas EC 250 — Lightweight Two-Stroke Enduro
The EX 250 variant produced 43.2 hp and 29.0 lb-ft of torque on Dirt Rider’s Dynojet 250i (Dirt Rider, 2024). At 211 lbs dry, it’s quick off the line but gearing limits top end to an estimated 70–78 mph. The EC 250 enduro version runs shorter sprocket ratios suited for tighter technical terrain.
10. GasGas MC 125 — The Entry-Level Screamer
The MC 125’s 125cc two-stroke rev-bomb won’t win a drag race against a 450, but its ultralight build (~198 lb dry) and relentless top-end pull make it faster than many riders expect. MXA called the 2023 model the fastest 125cc bike in its MX class on their dyno (MXA, 2023). Top speed on stock 14/49 gearing is estimated at 65–72 mph. You won’t be watching the speedo — you’ll be holding third gear wide open.
Why GasGas Doesn’t Publish Top Speeds for Dirt Bikes
Off-road competition bikes — every MC, EC, and EX in the lineup — are built for acceleration and handling on specific terrain, not maximum velocity. Gearing is set for optimal power delivery within typical track or trail speed ranges; the engine hits its rev limiter well before aerodynamics become a factor. Manufacturers like GasGas, KTM, and Husqvarna don’t run or publish top-speed figures for these models. The figures in this article for competition models are estimates and should not be cited as specifications.
Frequently Asked Questions About GasGas Top Speeds
What is the fastest GasGas motorcycle you can buy?
The GasGas SM 700 is the fastest production GasGas available in the US, with a real-world top speed of approximately 105 mph. It runs the 692.7cc KTM LC4 single-cylinder engine. Cycle World’s dyno test returned 66.4 hp at the rear wheel for the 2023 model (Cycle World, 2023).
How fast does the GasGas MC 450F go?
The MC 450F’s top speed on stock gearing is estimated at 78–83 mph. GasGas doesn’t publish a top-speed figure, and no major publication runs GPS top-speed tests on motocross bikes. The 2025 standard model makes 52.9 hp at the rear wheel; the 2025 Factory Edition makes 57.4 hp (Dirt Rider, 2025).
Are GasGas motorcycles the same as KTM?
GasGas, KTM, and Husqvarna are all owned by Pierer Mobility and share platforms, engines, frames, and suspension. GasGas models are mechanically near-identical to KTM counterparts but use softer tuning and some lower-spec components to hit a lower price point.
Is the GasGas EC 300 fast for a two-stroke?
Yes. With approximately 50 hp and a six-speed transmission, forum GPS data puts its top end at 80–84 mph on stock gearing — competitive with any 300cc two-stroke enduro bike. The engine’s real strength is bottom and midrange torque, which makes it feel faster on tight trail than the numbers suggest.
How do GasGas speeds compare to KTM and Husqvarna?
Nearly identical. The SM 700 matches the KTM 690 SMC R and Husqvarna 701 Supermoto at ~105 mph. The MC 450F runs about 0.3 hp behind the KTM 450 SX-F at peak rear-wheel output (Dirt Rider, 2025). GasGas tuning trends milder across the lineup, which shows in throttle feel more than top speed.
