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All Bikes/Suzuki/Gsr400
Suzuki Gsr400
Naked

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.

スズキGSR400は、主に日本国内市場を対象としたネイキッドミドル級ストリートファイターとして2006年に発売されました。GSR600プラットフォームをベースにしていますが、日本の400ccライセンスクラス制限を満たすように調整が解除されました。GSX-R系統から派生した直列4気筒エンジンを搭載し、直立した人間工学に基づいたパッケージでスポーティなパフォーマンスを発揮しました。このモデルは、初心者ライダーと中級者間のギャップを埋めることで有名で、2013年頃まで生産され続け、実用的でありながらエキサイティングなシティバイクやウィークエンドバイクとして日本で強い人気を博しました。

55 hp

パワー

40 Nm

トルク

181 kg

ウェイト

180 km/h (estimated)

トップスピード

5.5 L/100km (approx. 18 km/L typical real-world average)

燃料

裸

ボディ

🔧 Service Schedule & Parts

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📍 What's due on yours?
GK7DA inline-four naked
Service item Every Typical cost Parts
🛢️ Engine oil + oil filter 6,000 km / 3,500 mi or 12 mo $40-80 🛢️ Buy →   ⚙️ Buy →
🌬️ Air filter 12,000 km / 7,500 mi — 🌬️ Buy →
⚡ Spark plugs 12,000 km / 7,500 mi — ⚡ Buy →
🔧 Valve clearance check 24,000 km / 15,000 mi $200-400
🔗 Chain & sprockets 25000-40000 km (replace) $150-300 🔗 Buy →
🛑 Brake pads 15000-25000 km $30-60 🛑 Buy →
💧 Brake fluid 24,000 km / 15,000 mi or 2 yr —
🧊 Coolant 24,000 km / 15,000 mi —
🛞 Tires 10000-20000 km $200-400 🛞 Buy →
🔩 Major service 24,000 km / 15,000 mi $300-600
💰 Annual upkeep ~$350-650 🔩 Reliability 8/10 Bulletproof Suzuki GSR400 inline-four nakeds respond well to regular 6000km oil changes and careful carb sync; Japanese-market focused model with strong parts availability.

Video Review

Watch Video Review

購入者が知っておくべきこと

🔧

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.

年別の世代と仕様

2006–2012 Gen 1

400ccのネイキッドストリートファイターを直列4台搭載したオリジナルモデル。生産段階を経て外観に若干のアップデートを加えた単世代モデル。

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8.2/10

"日本で最もよく守られている400ccの秘密は、犯罪的に過小評価されている。"

東京郊外への通勤や週末のブラストで2年かけてGSR400に18,000km走ったけど、1万rpmを超えるインラインフォーの歌声は決して古くならなかった。400ccのツインにはかなわない意味で本当に緊急な走りだ。裸で直立したエルゴノミクスは、長距離でも背中を壊すことなくアグレッシブなシティライディングに適しています。また、シャーシはミッドコーナーで信頼すれば、真の自信につながります。ただし、弱点は現実のものです。6,000 rpm未満では動作が遅く、印象的ではないため、ストップスタートのトラフィックで疲れてしまうパワーバンドの肉にギアボックスを常に収めるようにギアボックスを動かしています。OEMシートは90分後にコンクリートに変わるため、日本国外で部品を見つけるには忍耐と良好な輸入者関係が必要です。

プロ

+絶叫するトップエンドのインライン4キャラクター
+しっかりとしたニュートラルなシャシー
+アクセシブルシート高790mm
+防弾スズキ信頼性記録
+高い中古市場価値

短所

−毎分6,000回転以下でデッド
−座り心地の悪いストックシート
−日本国外では希少な部品
−ギアボックスの頻繁な注意が必要
こんな方に最適: 本物のパフォーマンスを求めるライセンス制限のあるライダー 次の場合はスキップ: 常にレブチェイスをするのが嫌いですか

中古購入者レビュー

7.5/10
こんな方に最適
Experienced riders wanting affordable inline-four thrills

"A rewarding, rev-hungry gem if you buy carefully."

$2,500-$4,500 used

The 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.

プロ
短所
次の場合はスキップ: You need easy parts availability and dealer support

Top 10 Accessories

Curated picks for the Suzuki Gsr400 — owned, ridden, recommended.

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よくある問題

🔥 1 CRITICAL
⚠️Carb sync and jetting issues MODERATE

Rough idle, flat spots, uneven throttle response

Fix cost: $80-$200
🔥Rectifier/regulator failure SERIOUS

Battery not charging, flickering lights at high RPM

Fix cost: $60-$150
⚠️Cam chain tensioner wear MODERATE

Rattling noise on cold start near engine top

Fix cost: $50-$120

✅購入前チェックリスト

☐Check for oil leaks around engine seals
☐Test charging voltage at 3000 RPM
☐Listen for cam chain rattle cold
☐Inspect carb sync and throttle response

Solid older bike, maintenance-dependent, budget for carbs

Full Specifications

Engine Power 55 hp @ 12,000 rpm (Note: best estimate; exact figures vary by market spec)
Torque 40 Nm @ 10,000 rpm (Note: best estimate)
Top Speed 180 km/h (estimated)
Weight 181 kg (wet/curb weight)
Fuel Consumption 5.5 L/100km (approx. 18 km/L typical real-world average)
Type Naked
Fairing No Fairing (Naked)

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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.