About the Honda CB125TT
A practical parts guide for the 1990 CB125TT, including the A and AC catalog labels.
The 1990 Honda CB125TT has its own OEM parts-catalog entries, including A and AC versions. Keep that full identity with your order: a CB125S, CB125T or CB125TD name alone does not confirm a TT application. The CB125 family collection is the starting point when the model still needs resolving.
Match the repair to a measurable part
For fork service, the featured oil seals measure 31 × 43 × 10 mm. For a float or front master-cylinder repair, the product references below provide a second check alongside shape and mounting. This is especially useful on a bike with replacement forks, a different carburetor or changed handlebar controls.
Know your model before choosing partsCB125TT model and repair differences
1990 CB125TT A / AC
Keep the complete catalog label
The OEM catalog separates A and AC entries and shows additional air-suction and canister diagrams under AC. Record the version on the motorcycle before comparing fuel and emissions-related components.
Fork oil seals
31 × 43 × 10 mm
The CB125TT 1990 seal set lists these three dimensions. Match inside diameter, outside diameter, height and profile; check fork-tube condition before replacing a leaking seal.
Carburetor float
Reference 16013-KR3-980
The featured float is sold individually and lists CB125TT 1990. Compare its hinge, body shape and valve-contact point. A float is separate from a float needle or a complete carburetor kit.
Front hydraulic master cylinder
Reference 45530-MA4-671
The repair kit lists CB125TT 1990. Match the fitted master-cylinder bore and piston/seal arrangement. It services the handlebar unit; a caliper repair needs its own parts.
Frame, engine and component checksIdentify your CB125TT before ordering
Record the frame and engine markings, then compare the component being repaired. Include replacement-engine or chassis details if the motorcycle has been modified.
- Preserve every letter of the model code and record the original market if known.
- Record the engine number separately; it does not automatically match the frame after a swap.
- Compare the carburetor identification and float shape before ordering fuel parts.
- Measure the old fork seal and identify the master-cylinder assembly independently of the model badge.
Contact PartsNMore with your CB125TT model year, full markings and clear photos of the component.
Model reference: 1990 Honda CB125TT OEM catalog, A and AC entries. Use the component diagram alongside the motorcycle’s identification and the replacement product details.