Front Axle

Schematic: F-10 Front Wheel
Affected/related parts: front fork


Variation 1: Early style different diameter axle

• Distinguishing features:
• There is a thicker 17mm section on the right side of the axle
• Part number(s):
• 44311-028-000: frame number 111,565 to 640,254
• Early or Late: Early
• Matching/required parts:
• Early front fork (with removable axle holders)
• Front wheel side collar (17mm OD, at left of the picture below)
• 17x37x7 oil seal [part 90755-028-000]
• Notes:
• This style axle matches the early front forks with the detachable axle holders
• This axle requires a 10x1.25 (fine thread) nut which is a discontinued Honda part and a bit harder to find.  [part 90305-001-000]

Variation 1: Late style single diameter axle

• Distinguishing features:
• Part number(s):
• 44301-229-000: superceded
• 44301-229-010: frame number 639,755 to 930,010 (has thru-hole end)
• 44301-107-000: frame numer 930,011 onward (has captured nut end)
• Early or Late: Late
• Matching/required parts:
• Late front fork (single piece)
• 21x37x7 oil seal [part number 90755-229-000]
• Side collar (spacer) with 21mm OD [part 44311-028-000]  
• Notes:
• This style axle matches with the late style single-piece front fork
• This axle requires the more common 12mm axle nut.  [part 90305-028-000]

Rear Fork (Swingarm)

Schematic: F-26 Rear Fork
Affected/related parts:


Variation 1: Early Style with Straight Bar

• Distinguishing features:
• The bar connecting the two arms looks like a straight tube
• Part number(s):
• 52100-028-601Z 
• 52100-028-602Z
• Early or Late: Early
• Frame number 111,565 to 142,498 and 424,487 to 499,220
• Matching/required parts:
• Notes:
• Luckily, either version of the Chain Case fits on either version of the swingarm

Variation 2: Late Style with Curved Bar

• Distinguishing features:
• The bar connecting the two arms has a curve to it
• Part number(s):
• 52100-028-603Z
• Early or Late: Early
• Frame number 499,221 onward
• Matching/required parts:
• Notes:
• Luckily, either version of the Chain Case fits on either version of the swingarm

Transmission

Schematic: E-12 Transmission



Variation 1: Early Style with 10 Narrow Splines

• Distinguishing features:
• There are 10 splines on the shaft and gears, and they are narrower than those on the Late style
• Part number(s):
• Early or Late: Early

Variation 2: Late Style with 6 Wide Splines

• Distinguishing features:
• There are 6 splines on the shaft and gears, and they are wider than those on the Early style
• Part number(s):
• Early or Late: Late

Side by Side (Early=Left, Late=Right)

Clutch Outer Cover Gasket (or O-ring)

Schematic: E-7 Clutch
Affected/related parts: Clutch outer cover


Variation 1: Early style O-ring

• Distinguishing features:
• A perfectly circular o-ring (as opposed to the Late gasket with holes for the fastener)
• Part number(s):
• 91302-030-000
• Early or Late: Early
• Frame number 111,565 to 142,498 and 424,487 to 527,510

Variation 2: Late style Gasket

• Distinguishing features:
• A gasket that includes holes for the 2 cover fasteners
• Part number(s):
• 22112-028-000
• Early or Late: Late
• Frame number 527,511 onward

Gear Shift Fork

Schematic: E-9 Gear Shift Fork
Affected/related parts: Shift drum


Variation 1: Early style with Bolt

• Distinguishing features:
• The forks are secured to the drum using a bolt and locking washer
• Part number(s):
• 24221-028-010 (Left)
• 24211-028-010 (Right)
• Early or Late: Early
• Frame number 111,565 to 142,498 and 424,487 to 527,510

Variation 2: Late style with Pin and Clip

• Distinguishing features:
• The forks are secured to the drum using a pin and clip
• Part number(s):
• 24221-028-335 (Left): frame number 527,511 onward
• 24211-028-030 (Right): frame number 527,511 to 583,760
• 24211-028-345 (Right): frame number 583,761 onward
• Early or Late: Late

Inline airbox cover

Schematic: F-14 Air Cleaner
Affected/related parts:



Variation 1: "Pearl Gray" plastic version

• Part numbers:
• 17251-028-020XM (left side)
• 17231-028-050XM (right side)
• Frame number 527,511 to 679,640

Version 2: Chrome version

• Part numbers: 
• 17251-028-670XW (left side)
• 17231-028-670XW (right side)
• Frame number 679,641 onward

Left Crankcase Cover Gasket (Dynamo)

Schematic: E-4 Left Crankcase Cover - Dynamo
Affected/related parts: Left crankcase cover, left crankcase


Variation 1: Early style squared off corner at bottom right

• Part number(s):
• 11394-028-010, frame #111,565 to 142,498 and 424,487 to 527,510
• 11394-028-020, frame 527,510 to 646,093

Variation 2: Late style with extra hole at bottom right

• Part number(s):
• 11394-028-030
• Early or Late: Very late
• Frame number 646,094 onward