2022 YAMAHA WR250F / WR450F

停不了的改良,成就王者之路

   

Yamaha創新的引擎設計,把WR250F和WR450F的進氣閥放在前方,令盤頂擺放位置和傳統引擎剛好相反。營造出低重心和緊湊的車體設計。也因為這項創新設計,令風盒可以更直接地安裝在油缸之上,進氣更方便。WR250F在車把上安裝可以改變引擎動力模式的切換開關,車手可以選擇在通信控制單元儲存兩種不同設置模式,或可以使用自己使用Power Tuner應用程序創建的自定義的程式,以適應騎行時不斷變化的道路條件。

為了提供高水平的保護,WR250F採用由輕質塑料樹脂製成的新型防撞板。除了幫助屏蔽框架,水泵,軟管和發動機外殼,它還可以防止灰塵和泥漿進入,從而增加運行重量 - 它的平底設計,除了防撞之外,還有助於確保在岩石和倒下的樹木上順利滑行。

WR250F和WR450F在2020年才推出新版本,沒想到來到2022年,更新幅度竟然相當大。主要是橫掃AMA頒獎臺的YZ250F有很多更新,所以過落WR250F身上。留意Yamaha WR250F及WR450F僅適用於競賽規格,不含EU5認證,只適用於封閉道路,私人領域和參與的特定活動。



新車由車架到機器到細微配件都有更新:
 

New YZ250F type cylinder head
New YZ250F specification exhaust camshaft
New YZ250F shape intake port
New YZ250F type intake joint
Improved camchain tensioner design
Redesigned engine balancer
New gearbox shift cam
New CF-die cast aluminium Deltabox frame

New engine brackets with WR-specific rigidity levels
Industry leading KYB speed sensitive forks with revised damping settings
New top triple clamp with redesigned handlebar clamps
New YZ250F type footrests, handlebars and front axle
New multi-function meter
Stronger chain guide bracket
New 270mm front disc with 16% larger surface area


New more rigid front brake caliper with larger pistons
New front brake pads giving 25% more contact area with disc
New exhaust heat guard
New stronger muffler bracket



和WR250F一樣,2022 WR450F也接收了相同的更新,以下是新車賣點:

450cc liquid-cooled 4-stroke DOHC engine
Reversed cylinder head with forward facing inlet
Yamaha Power Tuner for smartphone engine tuning
Compact instrumentation with fuel consumption indicator
Electric start
Large capacity radiators with cooling fan
Excellent mass centralization for lightweight handling
Wide-ratio 5-speed enduro-specific transmission

Durable heat-resistant clutch with quick-adjuster
Compact and lightweight aluminium Deltabox frame
Industry-leading KYB speed sensitive damping front forks
Link type rear suspension
KYB shock with high capacity reservoir
4-position rubber-mounted adjustable handlebars
Handlebar-mounted dual mode engine mapping switch

7.9 litre fuel tank
Lightweight resin skid plate
Icon Blue bodywork
Blue wheel rims
In mould graphics
Flat and slim seat
O-ring chain
High-mounted aluminium sidestand