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All Bikes/Yamaha/Sr400
Yamaha Sr400
Classic

Yamaha Sr400

The Yamaha Sr400 has a top speed of 145 km/h, produces 24 hp and weighs 175 kg. Motoryk rates it 7.5/10.

雅马哈 SR400 于 1978 年推出,是一款简单、轻便的单缸敞篷跑车,其灵感来自经典的英国重磅跑车,在整个量产运行过程中,其性质基本保持不变。它已在某些市场停产,但众所周知,它在2010年恢复了活力,增加了燃油喷射以满足排放标准,因其极简设计和仅限启动的操作而成为备受喜爱的经典之作。SR400 以其非凡的使用寿命和永恒的美学而著称,使其成为全球咖啡赛车手和定制摩托车文化的基石。

24 hp

权力

28 Nm

扭矩

175 kg

重量

145 km/h

最高速度

2.7 L/100km (approximately 37 km/L)

燃料

裸体

身体

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买家应该知道什么

🔧

Kick-Start Only Engine

The SR400 uses a traditional kick-starter with a decompression lever, requiring a learned technique to start reliably. Once mastered, the air-cooled 399cc single is famously durable and simple to maintain.

📈

Strong Resale Value

The SR400 holds its value exceptionally well due to its cult following and retro appeal, often selling used for close to original MSRP. Limited US availability (2014–2016 import window) makes clean examples especially sought after.

⚠️

Watch for Carburetor Issues

Bikes left sitting often develop clogged carburetors from stale fuel, a common issue on used examples. Always inspect for smooth throttle response and ask about storage history before buying.

按年份划分的世代和规格

1978–1984 Gen 1

原装 SR400 推出时采用风冷单缸 SOHC 发动机、鼓式前制动器、经典造型。

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8.2/10

"诚实、有特色的单曲,奖励耐心、熟练的骑手。"

如果你不尊重它,SR400 就会退缩 —— 字面意思。确定减压器杠杆顺序,它就会发出令人满意的重击;搞砸它,你的小腿就会付出代价,这种仪式要么把你绑在自行车上,要么让你崩溃。尽管27马力意味着高速公路超车需要计划,而不是冲动,但一旦滚动,扭矩大、不匆忙的单缸车就能干净利落地从低转速中拉出来,具有机械亲密感,这是多缸机器所无法获得的。鼓式前制动器在城里行驶足够了,但是在硬停时激发了零的信心,而且 174 千克的湿刹车比看上去还要重,这让新车手在停车场的速度下措手不及。尽管如此,狭窄而直立的骑行姿势、简单的车架几何形状以及独特的排气音符让每一次中短的旅程都让人感到刻意和回报,这是现代燃油注入式单曲无法完全复制的方式。

优点

+角色丰富的启动仪式
+强劲的低转速扭矩输送
+狭窄、令人自信的操控性
+精美简单、可重建的引擎

缺点

鼓式前刹车感觉微不足道
Kickstart 会惩罚技术错误
在 110 km/h 以上轻松挣扎
最适合: 都市纯粹主义者渴望机械连接 跳过 if: 你每天都要在双车道上快速上下班
1985–2008 Gen 2

推出了前盘式制动器,在长期生产过程中进行了小幅更新,市场主要是日本。

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7.8/10

"诚实、不匆忙的简单,实际上可以教会你一些东西。"

与我拥有的任何其他自行车相比,在东京的交通中使用第 2 代 SR400 让我学会了更多关于油门控制的知识——无论你是否愿意,这种启动仪式都会迫使我出现。前盘是对旧鼓的真正升级,但不要误以为它能激发信心;它足够了,不够坚固,需要以任何高于 80 km/h 的速度进行规划。重击者的扭矩曲线既诚实又狭窄,在气喘吁吁之前在 3,500 到 5,500 rpm 之间拉得干干净利落,这意味着高速公路可以生存,但在 110 以上,从来都不舒服。它在 30,000 公里后会漏一点油,振动你的镜子变得毫无用处,而且电气设备差不多与 20 世纪 80 年代的廉价手表一样坚固——但这些都无法阻止你每天都想骑它。

优点

+开启仪式真正有回报
+轻便、可闪烁的城市底盘
+前盘确实有所改进
+简单的 OHV 发动机,易于上门维护
+永恒的剪影精美老化

缺点

110 km/h 以上气喘吁吁
镜面振动遮挡了后视图
老例子中的电气小鬼
刹车感觉仅够用,没有鼓舞人心
最适合: 想要机械参与的都市古典主义者 跳过 if: 你每天都在长途公路上上下班
2010–2016 Gen 3

增加了燃油喷射,更新了以符合排放标准,并在全球范围内推出了电动起动器选项。

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2018–2021 Gen 4

进一步的排放合规性更新,符合欧4和日本的国内标准,细微的改进。

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二手买家评论

7.5/10
最适合
Urban riders wanting style and mechanical simplicity

"A beautiful, rewarding machine — but only for committed, patient riders."

$4,500-$7,500 used

The SR400 is a genuinely charming machine, but don't let the retro aesthetics fool you into ignoring what you're actually buying. This is a kickstart-only, carbureted single-cylinder from a different era, and that's both its greatest strength and its most significant commitment. Learning to kick it properly takes genuine technique — flood it once in traffic and you're pushing it to the kerb looking sheepish. Mechanically these things are bulletproof when maintained, but neglected examples are surprisingly common. Check the carb thoroughly — flat spots and rough idling usually mean a dirty pilot jet. The seat foam collapses quickly on older examples, turning any ride over an hour into genuine punishment. Cables, chain, and sprockets wear predictably but get ignored by owners who think minimal use means minimal maintenance. What you actually get for your money is legitimately beautiful styling, a peaky little motor that rewards rev-happy riding, and handling that's surprisingly competent despite the vintage suspension. It's honest, simple, and enormously satisfying when everything works right.

优点
缺点
跳过 if: You need reliable daily highway commuting sorted

Recommended Gear & Accessories

常见问题

🔥 2 CRITICAL
⚠️Carb gumming from ethanol fuel sitting MODERATE

Cold start behavior, idle quality, fuel petcock condition

Fix cost: $50-$150
⚠️Kickstart mechanism wear or slipping MODERATE

Kick feel for sponginess, ratchet engagement consistency

Fix cost: $100-$300
🔥Valve clearance neglect causing hard starts SERIOUS

Service history records, compression test result

Fix cost: $80-$200
🔥Corroded or cracked rubber fuel lines SERIOUS

Smell for fuel leaks, inspect lines visually

Fix cost: $20-$60

购买前清单

Ask for full service and oil change history
Test kickstart multiple times when cold
Inspect frame for cracks near welds
Check title is clean and matching VIN

Bulletproof if maintained, fragile when neglected

Full Specifications

Engine Power 24 hp @ 6,500 rpm
Torque 28 Nm @ 3,000 rpm
Top Speed 145 km/h
Weight 175 kg (wet/curb weight)
Fuel Consumption 2.7 L/100km (approximately 37 km/L)
Type Classic
Fairing No Fairing (Naked)

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Community Reviews

Discussion

Frequently Asked Questions

What are common problems with the Yamaha Sr400? +

Carb gumming from ethanol fuel sitting: Cold start behavior, idle quality, fuel petcock condition (moderate) | Kickstart mechanism wear or slipping: Kick feel for sponginess, ratchet engagement consistency (moderate) | Valve clearance neglect causing hard starts: Service history records, compression test result (serious)

Is the Yamaha Sr400 a good motorcycle? +

A beautiful, rewarding machine — but only for committed, patient riders. Rating: 7.5/10. Best for: Urban riders wanting style and mechanical simplicity. Avoid if: You need reliable daily highway commuting sorted.

What is the horsepower of the Yamaha Sr400? +

The Yamaha Sr400 produces 24 hp @ 6,500 rpm, with 28 Nm @ 3,000 rpm of torque. Top speed: 145 km/h.

Is the Yamaha Sr400 good for beginners? +

Not really — the Yamaha Sr400 is better for experienced riders (246500 hp can be intimidating). Urban riders wanting style and mechanical simplicity Avoid if: You need reliable daily highway commuting sorted

Is the Yamaha Sr400 reliable? +

Owners report 2 critical issues to watch for on the Yamaha Sr400, notably: Valve clearance neglect causing hard starts (Service history records, compression test result). Buy with a pre-purchase inspection.

Is the Yamaha Sr400 good for daily use? +

Urban riders wanting style and mechanical simplicity Fuel: 2.7 L/100km (approximately 37 km/L).