Suzuki Gsr400
The Suzuki Gsr400 has a top speed of 180 km/h (estimated), produces 55 hp and weighs 181 kg. Motoryk rates it 7.5/10.
The Suzuki GSR400 was introduced in 2006 as a naked middleweight streetfighter aimed primarily at the Japanese domestic market, based on the GSR600 platform but detuned to meet Japan's 400cc license class restrictions. It featured a inline four-cylinder engine derived from the GSX-R lineage, offering sporty performance in an upright ergonomic package. The model was notable for bridging the gap between beginner and intermediate riders and remained in production until around 2013, enjoying strong popularity in Japan as a practical yet exciting city and weekend bike.
55 hp
Power
40 Nm
Torque
181 kg
Weight
180 km/h (estimated)
Top Speed
5.5 L/100km (approx. 18 km/L typical real-world average)
Fuel
Naked
Body
Video Review
What Buyers Should Know
Proven Reliable Engine
The GSR400 shares its inline-four engine architecture with Suzuki's well-regarded GSF400 Bandit, giving it a reputation for durability when properly maintained. Regular valve clearance checks are recommended as they can tighten over time.
Watch for Carb Issues
As a carbureted model, the GSR400 is prone to clogged carburetors if left sitting unused, leading to rough idling or starting problems. Always inspect the carb condition and fuel system before buying a used example.
Japan-Market Resale Value
The GSR400 was primarily sold in Japan, making parts availability outside Japan limited and potentially costly. However, this also means well-kept examples hold their value reasonably well among enthusiasts who appreciate its sporty naked styling.
Generations & Specs by Year
Original inline-four 400cc naked streetfighter; single-generation model with minor cosmetic updates over production run.
"Japan's best-kept 400cc secret, criminally underrated."
I put 18,000 km on a GSR400 over two years commuting Tokyo suburbs and weekend blasting, and that inline-four singing past 10,000 rpm never got old — it's genuinely urgent in a way no 400cc twin can match. The naked, upright ergonomics suit aggressive city riding without destroying your back on longer hauls, and the chassis inspires real confidence once you trust it mid-corner. Weaknesses are real though: below 6,000 rpm it's sluggish and unimpressive, so you're constantly working the gearbox to keep it in the meat of the powerband, which gets tiring in stop-start traffic. The OEM seat turns to concrete after 90 minutes, and finding parts outside Japan requires patience and a good importer relationship.
Pros
Cons
Used Buyer Review
"A rewarding, rev-hungry gem if you buy carefully."
$2,500-$4,500 usedThe GSR400 is Suzuki's forgotten gem — a naked middleweight that punches harder than its displacement suggests. That inline-four pulls cleanly from 4,000rpm and absolutely sings past 8,000, giving you genuine sportbike thrills without the back-breaking crouch. It's based on the GSX-R400 engine in a more relaxed chassis, which tells you everything about its character. Flickable, light, and genuinely fun on twisty roads. Used, these can be a minefield. Most examples coming out of Japan have had hard lives, so check the frame rails for crash damage around the headstock — it's the first thing to go. Cam chain tensioners can rattle on neglected bikes, so cold-start them and listen carefully. Regulator-rectifiers are a known weak point on older units; bring a voltmeter. Parts availability is patchy outside Japan, which is the honest truth nobody tells you upfront.
Top 10 Accessories
Curated picks for the Suzuki Gsr400 — owned, ridden, recommended.
Common Problems
🔥 1 CRITICALRough idle, flat spots, uneven throttle response
Battery not charging, flickering lights at high RPM
Rattling noise on cold start near engine top
✅Pre-Purchase Checklist
Solid older bike, maintenance-dependent, budget for carbs
Full Specifications
Rivals & Alternatives
Bikes that buyers cross-shop with the Suzuki Gsr400
Kawasaki Z400
Honda Cb400
Suzuki Gsr600
Suzuki Bandit 600
Honda Cb400sf
Compare Suzuki Gsr400 Side-by-Side
compare_arrowsSpecs, power, weight & buyer verdict — head-to-head with the bikes most often cross-shopped.
Suzuki Gsr400 vs Kawasaki Z400
Specs · Power · Buyer verdict
Suzuki Gsr400 vs Honda Cb400
Specs · Power · Buyer verdict
Suzuki Gsr400 vs Suzuki Gsr600
Specs · Power · Buyer verdict
Suzuki Gsr400 vs Suzuki Bandit 600
Specs · Power · Buyer verdict
Suzuki Gsr400 vs Honda Cb400sf
Specs · Power · Buyer verdict
More Suzuki Gsr400 Guides
More from Suzuki
View all Suzuki models →Community Reviews
Discussion
Frequently Asked Questions
What are common problems with the Suzuki Gsr400? +
Carb sync and jetting issues: Rough idle, flat spots, uneven throttle response (moderate) | Rectifier/regulator failure: Battery not charging, flickering lights at high RPM (serious) | Cam chain tensioner wear: Rattling noise on cold start near engine top (moderate)
Is the Suzuki Gsr400 a good motorcycle? +
A rewarding, rev-hungry gem if you buy carefully. Rating: 7.5/10. Best for: Experienced riders wanting affordable inline-four thrills. Avoid if: You need easy parts availability and dealer support.
What is the horsepower of the Suzuki Gsr400? +
The Suzuki Gsr400 produces 55 hp @ 12,000 rpm (Note: best estimate; exact figures vary by market spec), with 40 Nm @ 10,000 rpm (Note: best estimate) of torque. Top speed: 180 km/h (estimated).
Is the Suzuki Gsr400 good for beginners? +
Yes — the Suzuki Gsr400 is a reasonable choice for new riders (55 hp is manageable), weighing 181 kg. Experienced riders wanting affordable inline-four thrills
Is the Suzuki Gsr400 reliable? +
Owners report 1 critical issue to watch for on the Suzuki Gsr400, notably: Rectifier/regulator failure (Battery not charging, flickering lights at high RPM). Buy with a pre-purchase inspection.
Is the Suzuki Gsr400 good for daily use? +
Experienced riders wanting affordable inline-four thrills Fuel: 5.5 L/100km (approx. 18 km/L typical real-world average).
How fast is the Suzuki Gsr400? +
The Suzuki Gsr400 reaches a top speed of 180 km/h (estimated), producing 55 hp at 181 kg curb weight. Real-world performance depends on rider weight, gearing, and road conditions.
What gear should I buy for a Suzuki Gsr400? +
Motoryk has curated a Top 10 gear list specifically for the Suzuki Gsr400, covering engine oil, tires, chain, battery, and brake pads — see motoryk.com/bikes/suzuki/gsr400/top10. Each pick is matched to this bike's spec.
