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Re: rear shock sealhead Kyoba on Y Z 426 F
I assume you have disassembled the shock, ground off the peened end of the shock shaft, removed the shaft nut, and have the seal head off already? If so I recommend not to disassemble the seal head itself. The fragile little bushings and seals in the inner diameter of the seal head are extremely difficult to R&R without scarring the seal head or the replacement parts. Your local dealer can order a complete seal head from KYB Direct or Moose at a reasonable price. This is a much easier and more reliable fix.
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Yamaha YZ 426 F
Cross / motocross
71.6 out of 100
Engine and transmission
426.00 ccm (25.99 cubic inches)
Single cylinder, four-stroke
Bore x stroke:
95.0 x 60.1 mm (3.7 x 2.4 inches)
Valves per cylinder:
Chassis, suspension, brakes and wheels
300 mm (11.8 inches)
Rear suspension travel:
315 mm (12.4 inches)
Front tyre dimensions:
Rear tyre dimensions:
Front brakes diameter:
250 mm (9.8 inches)
Rear brakes diameter:
240 mm (9.4 inches)
Physical measures and capacities
105.0 kg (231.5 pounds)
998 mm (39.3 inches) If adjustable, lowest setting.
1,303 mm (51.3 inches)
2,171 mm (85.5 inches)
827 mm (32.6 inches)
375 mm (14.8 inches)
1,490 mm (58.7 inches)
I have owned both these models and they are virtually identical apart from some minor differences. You will have no problem swapping engines between these 2 models. In fact pretty much every part is interchangeable.