Honda motorcycle parts
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1980 Honda CB900C Custom · Suspension & Wheel Parts Buying guide
The original 1980 CB900C has air-assisted forks, linked rear air shocks and shaft final drive. The listed 325 mm replacement shocks use coil springs and preload adjustment. Identify the fitted assembly before ordering fork seals, shocks or wheel parts.
37 × 50 × 11mm fork sealsJapanese-made fork seal set for the CB900C application.View part
325mm chrome-spring shocksBlack bodies with chrome springs and end caps; four preload positions, with bushings, inserts, washers and preload wrench.View part
Front wheel seal pairTwo-piece front-wheel seal kit for the CB900C application.View part
Related parts: Tapered steering-bearing kit · 6302-2RS front bearing · Single rear wheel seal
The 37 × 50 × 11 mm fork oil seals are separate from the dust seals and cap O-rings. The original air-assisted forks need the correct year’s service procedure: Honda revised fork data in the 1981 CB900C addendum. Shared replacement-seal dimensions do not mean every year uses the same refill instructions.
The linked 6302-2RS front bearing is specified twice per front wheel. The front seal kit contains two pieces, while the rear seal is supplied as one. A seal kit is not a bearing kit, so count both product types independently.
The featured 325 mm sets specify four-position spring preload adjustment. Honda’s original shocks use a linked air system, so its rear-air pressure instructions do not describe these aftermarket sets. Follow the replacement maker’s fitting and adjustment instructions.
Locate the leak first. The CB900C has a separate shaft final-drive assembly, while the listed wheel seals serve the wheel hub positions. A front seal kit or single rear-wheel seal is not a complete final-drive seal kit.
Check the fitted forks too. The listed seals measure 37 × 50 × 11mm, but a swapped front end may use different parts. Match dimensions and the actual assembly before ordering.
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