Quick answer: identify whether the requested part is a rigid spacer, a rubber mounting grommet, a hub damper or a protective sleeve before you compare prices. Then record the installation position and the dimensions that define that specific part type. Similar round shapes can serve different jobs and are not interchangeable by appearance.
The motorcycle catalog includes a galvanized axle spacer sleeve in multiple sizes, an M12 × 24 × 18 mm wheel-axle spacer sleeve, a hub damper bushing listed for TBT underbones / KENBO motorcycles, and several rubber grommets or flanged sleeves. The item title for the M12 × 24 × 18 mm listing does not explain what each number measures; request a drawing that labels every value before placing an order.
Which part type are you sourcing?
Start with the installed position and function. A rigid axle spacer sets separation around a wheel or axle location. A hub damper or cushion sits in a hub-related pocket. A rubber grommet supports or isolates a panel, tank or bracket. A protective sleeve fits over a lever or shaft. Confirm the actual function from the removed part and the vehicle position rather than relying on a broad catalog category.
- The galvanized axle spacer sleeve listing identifies multiple sizes; ask for the current size range and drawing.
- The M12 × 24 × 18 mm wheel-axle spacer listing needs a supplier drawing that labels each measurement.
- The TBT / KENBO hub damper bushing and flanged rear-footpeg bracket sleeve are different listed applications.
- The GN125 tank-mounting grommet and GN125 / GS125 side-cover cushion should be checked at their own mounting points.
How do you measure a rigid axle spacer?
Record the bore or thread, outside diameter, overall length and any shoulder, step or flange. For threaded parts, distinguish the thread designation from a smooth internal bore. Photograph the component from both ends and from the side with a ruler or caliper in the frame. If the spacer is handed or used in a left/right pair, label the installation side and keep the pair together.
For the listing titled “M12 × 24 × 18 mm,” do not assume which number is the thread, outside diameter or length. Ask the supplier to mark the dimensions on a drawing or return a measurement sheet. For the galvanized sleeve in multiple sizes, ask which size codes are currently offered, the tolerance for each dimension, and whether the surface treatment is included on the specific SKU being quoted.
How should rubber grommets and sleeves be specified?
For a rubber mounting part, measure the panel or bracket opening, the inner opening, the body diameter, the total thickness and the shoulder or flange profile. Note how the part is retained: press-fit, captured between panels, or held by a fastener. Ask the supplier to confirm the material and hardness only if those properties are part of the buyer’s specification; do not infer them from color or a product photo.
For the GN125 tank and GN125 / GS125 side-cover references, send photos of the mounting point and the old grommet installed and removed. A similar-looking cushion can have a different flange, opening or compression thickness. Ask which exact model and position the listing refers to and whether left/right pieces differ.
What details matter for a hub damper or pivot bushing?
Record how many pieces are needed per hub or bracket and photograph the shape of each pocket. Measure the free-state length and the installed space where practical, and note any tab, key, flange or orientation mark. Ask the supplier to specify the number of pieces per set and provide a drawing for the matching hub or mounting bracket.
Do not treat a hub damper bushing as a generic spacer: one may be shaped to fit a pocket, while another part controls spacing or supports a different mounting point. If the product listing uses a vehicle-family reference, have the supplier confirm the exact hub or bracket code. Keep a buyer SKU for each shape and installation position.
What photo evidence should accompany the RFQ?
Send one overall photo of the motorcycle and the installation location, then close photos of the old part from the end, side and installed position. Place a ruler beside the part and include a clear view of any casting or part marks. Add a small sketch or measurement table if the part has an unusual step, groove, offset or flange.
When the original part is damaged, photograph both the damaged part and its mounting pocket. Ask the supplier to state which dimensions were measured directly and which fitment details still need confirmation. If the buyer cannot safely measure the mounting point, identify that field as “supplier to confirm from sample” rather than guessing.
How can distributors compare offers fairly?
Make one quote row per part type, size, position and model reference. Record whether the offer is for one piece or a set, whether coatings or fasteners are included, and whether the quoted sample matches the production SKU. Compare MOQ, price breaks, sample cost, lead time, packaging, quote validity and destination freight separately.
For rubber components, ask for the material description and any available specification only when the buyer requires it; have the supplier confirm this in writing. For a plated or galvanized metal sleeve, ask for the supplier’s stated finish and drawing. Do not compare a generic “spacer set” with a measured individual sleeve as though the contents were identical.
Spacer, bushing and grommet RFQ worksheet
| Field | What to record |
|---|---|
| Part type | Rigid spacer, hub damper, bracket bushing, tank grommet, panel cushion or protective sleeve. |
| Position | Vehicle model, year, engine or frame reference, mounting point and left/right side. |
| Dimensions | Bore or thread, outside diameter, length, thickness, flange and any stepped profile. |
| Evidence | End, side and installed photos; part markings; ruler or caliper scale. |
| Commercials | Pieces per set, MOQ per SKU, sample, price breaks and lead time. |
| Packing | Individual protection, inner-pack quantity, carton size and gross weight. |
Frequently asked questions
Can I order a spacer from the M12 × 24 × 18 mm title alone?
Use the title to find the listing, then ask for a drawing that shows exactly what each value means. Confirm the thread or bore, outside diameter and length against the original part before ordering.
Are tank grommets and side-cover cushions the same part?
Not necessarily. The catalog lists separate GN125 tank and GN125 / GS125 side-cover references. Confirm the mounting position, opening and profile with the supplier.
Can a product image prove the rubber material or fit?
No. A photo helps compare visible shape but does not establish the material, hardness, dimensions or fitment. Request written specifications and use an approved sample for the first order.
Next step for wholesale buyers
Browse the motorcycle parts catalog and its bushings & sleeves category, select the closest spacer or mounting component, and submit the vehicle reference, installation photos, measurements, quantity and destination through the wholesale RFQ form. Ask the supplier to label each measurement on the drawing and confirm any unverified fitment details before approving the sample.