Ktm Sx 450
KTM SX 450 F 作为 KTM 的旗舰摩托车越野赛车于 2003 年推出，旨在参加最高水平的专业越野摩托车比赛，包括 AMA 450 超级越野赛和摩托车越野锦标赛。多年来，它经历了重大演变，包括在2013年进行了重大重新设计，采用了新的铬钼钢框架，以及2016年又进行了又一次具有里程碑意义的大修，采用了全新的发动机架构和更高的功率重量比。它被广泛认为是有史以来最具竞争力的量产摩托车越野摩托车之一，曾由工厂支持的车手骑过无数次锦标赛。
~63 hp
权力
~54 Nm
扭矩
~106 kg
重量
~145 km/h (estimated; note: motocross bikes are not optimized for top speed, this is an approximate real-world figure)
最高速度
~7–9 L/100km (estimated; highly variable depending on riding intensity — note: motocross bikes are not typically measured by fuel economy)
燃料
裸体
身体
Video Review
买家应该知道什么
Tight Maintenance Schedule
The KTM 450 SX-F requires top-end rebuilds every 40-60 hours of riding, which is more frequent than many competitors. Always ask sellers for documented service records before buying.
Watch for Valve Wear
Titanium valves on high-mileage units are a known weak point — worn valves cause hard starting and poor performance. A compression test before purchase can reveal this issue quickly.
Strong Resale Value
KTM 450 SX-F bikes hold their value exceptionally well compared to Japanese brands, especially well-maintained examples. A clean, low-hours unit can retain 70-80% of its original value after one season.
按年份划分的世代和规格
作为 450 SX 推出，配备基于 RFS 的底盘、WP 悬架、化油发动机、铝制副车架。
"原始、诚实的力量可以奖励忠诚、经验丰富的车手。"
450 SX 像一把大锤一样冲击现场——2003 年装在 103 千克包中的 63 匹马感觉到了真正的暴力，而源自 RFS 的底盘给人一种固定、可以预见的感觉，这是二冲程人群不习惯的。WP 的悬架需要立即从箱子里拿出来；备用设置太软了，不适合任何高于中间速度的东西，而且在第一辆摩托车完成之前，你会很难回归地球。当你了解了它的气质后，449cc的重击车的调音会很愉快——中档油门反应清晰，高端的拉力会让任何认为四冲程很懒散的人感到惊讶。如果你每隔20-25小时进行一次气门检查，那么可靠性确实很可靠，但是跳过这个间隔，追逐一台坏掉的马达的速度会比你预期的要快。
优点
缺点
新的铬钼钢框架、经过改进的 WP 前叉、更新的发动机内部结构、改进的人体工程学和动力传输。
"野蛮、精确，绝对不适合业余爱好者。"
第二代 SX 450 终于解决了困扰其前身的帧弯曲问题——新的镀铬底盘具有真正的权威性，在中角保持了一条线条，没有我习惯于白指关节的模糊、漂泊的感觉。修改后的 WP 分叉开箱即用确实不错，我对工厂停产很少说这句话。没有人告诉你的是，一辆重达107千克的自行车需要不断的尊重——如果你在车祸的护堤上早点开油门，这件事将使你在下周二处于高位。维护成本是真实存在的：气门每过15-20小时就需要检查一次，如果你不顺利，离合器就会受到打击。
优点
缺点
推出了液压成型铝制车架，新的气缸盖，改进的悬架连杆，更轻的整体重量。
全新 WP Xact 悬架、修订的发动机映射、更新的车架几何结构、改进的动力和操控特性。
全新的车架和车身、地图选择开关、更新的发动机、改进的人体工程学设计和减轻的重量。
改进的车架、全新的 WP XACT Pro 悬架、更新的发动机内部结构、完善的人体工程学设计和改进的牵引力控制映射。
二手买家评论
"Extraordinary machine that ruthlessly punishes neglectful owners and rewards disciplined ones."
$4,500-$7,500 usedThe KTM 450 SX-F is a weapon, full stop. It's the bike that professional factory riders actually race, which tells you everything about its capability — and also everything about its demands. Used examples are everywhere because weekend warriors buy them thinking they'll ride like Cooper Webb, then reality hits hard around lap three. That's actually good news for savvy buyers, because you can find relatively low-hour bikes from guys who barely cracked the throttle open. Here's the honest truth: maintenance intervals are brutal and non-negotiable. We're talking valve checks every 15 hours, piston every 40. Ignore that and you're rebuilding a top end on your dime. Always ask for service records and walk away if they can't produce them. The WP suspension is genuinely world-class when properly set up for your weight, but it's stiff out of the box for lighter riders. Budget $200-400 for a proper suspension tune. Buy right and you'll have the most exciting 450 motocrosser ever built.
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