Honda CM450C Custom Parts & Accessories

Honda CM450C Custom Parts & Accessories

Honda's CM series brought the parallel-twin engine format into a comfortable, approachable cruiser package that appealed to new riders and experienced commuters alike. The Honda CM450C Custom runs a 449cc SOHC parallel-twin in a low-seat custom-style chassis with forward-positioned footpegs and a relaxed seating position. This is among the more capable CM models, combining the accessibility of the cruiser format with real mid-size performance. Riders keeping a CM on the road need carb hardware, clutch components, and chassis consumables that match OEM specifications.

Popular Upgrades

Frequently ordered parts for the CM series include Keyster carburetor rebuild kits, Barnett clutch friction plates and springs, NGK spark plugs, Emgo exhaust pipes and heat shields, fork seals, drive chain and sprocket sets, and Yuasa batteries. Barnett clutch kits provide better engagement feel than worn OEM plates. NGK plugs in the correct heat range keep combustion clean and prevent fouling on low-mileage runs.

Performance and Handling

The CM series front forks use conventional oil-damped tubes that benefit from fresh seal sets and oil every 20,000 miles or two years. Rear shocks can be replaced with aftermarket units at the correct extended and compressed lengths to maintain the CM's relaxed riding geometry. Drive chain stretch accelerates sprocket wear rapidly, so replacing chain and front and rear sprockets as a matched set is the most cost-effective maintenance approach. The drum or disc brake hardware is straightforward and responds well to fresh pads or shoes.

What carburetor kit fits a Honda CM450C Custom?

The CM450C uses dual Keihin CV carburetors. Keyster rebuild kits supply the correct jets for both carbs, along with needles, float valves, and all gaskets. Rebuilding both units at the same time with synchronized slides prevents the uneven power delivery common on partially serviced twins.

What clutch kit fits a Honda CM series?

Honda CM parallel-twins use a wet multi-plate clutch. Barnett clutch kits sized to the CM displacement include the correct number of friction plates and steel plates with the right thickness and OD. A fresh clutch spring set is always recommended alongside new plates to restore full clamping pressure and eliminate slippage under hard acceleration.

Why These Parts Fit Right

Parts are listed with the specific CM variant and model year required for accurate fitment. The CM series shares many components with CB counterparts, and cross-compatibility is noted where applicable. OEM-equivalent specifications mean installation requires only basic tools.

CM owners interested in related content can browse the exhaust systems collection, the suspension catalog for fork and shock upgrades, or explore air intake upgrades available for other Honda models.