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Among Honda suspension wear parts, the strut bump stop 52722-SM4-013 is a reference that wholesalers, importers, and repair chains request repeatedly. Bonpora manufactures this part under No. 4110046 as a polyurethane strut bump stop, size Φ12 x Φ46 x 103 mm, shipped direct from a Chinese factory with OEM and custom design support. This guide explains how the part works, how to verify it against the OE reference, and the sourcing routes trade buyers use when they need Honda bump stops in distributor quantities.
A strut bump stop, sometimes called a jounce bumper or compression bumper, sits on the damper rod of the strut assembly and remains inactive during normal driving. It engages only when the suspension compresses beyond its designed travel — a deep pothole, a fully loaded vehicle, or a hard strike on a speed bump. At that point the stop compresses progressively and cushions the final stage of the stroke, keeping the damper away from metal-to-metal contact.
When the stop ages, cracks, or collapses, the damper takes impacts it was never designed to absorb. Seal wear accelerates, oil leakage follows, and strut replacement arrives early. Workshops see the symptoms as a hard knock over bumps and harsh rebound on loaded corners. Because the stop is inexpensive compared with the damper it protects, most suspension specialists replace bump stops whenever struts are serviced, which keeps demand steady for the polyurethane bump stop range all year round.
The table below lists the main parameters of Bonpora No. 4110046, the replacement part matched to OE 52722-SM4-013.
| Parameter | Value |
|---|---|
| Product Name | Strut Bump Stop |
| OE Reference | 52722-SM4-013 |
| Bonpora No. | 4110046 |
| Fitment | Honda |
| Size | Φ12 x Φ46 x 103 mm |
| Material | Polyurethane |
| Country of Origin | China |
| Warranty | 1 Year |
| Delivery Time | 15-30 Days |
| Packaging | Neutral Export Packaging |
| Custom Service | OEM & Custom Design Support |
The three dimensions describe the application precisely. The 12 mm rod hole diameter centers the stop on the damper shaft, the 46 mm outer diameter forms the contact surface against the dust cover, and the 103 mm free height gives a tall, progressive engagement profile near the end of travel. When cross-referencing, compare all three measurements against the used part instead of judging by appearance alone, since several Honda stops look similar yet engage at different points of the stroke.
OE 52722-SM4-013 is a Honda parts reference in the 52722 series, which covers front strut bump stops across several Honda platforms. One reference family can extend across multiple models and model years, so fitment should be verified rather than assumed. Trade buyers typically confirm in one of three ways:
Confirmation before ordering prevents the most common fulfillment problem: a stop that looks correct but engages at the wrong travel point. The verification usually takes one working day and avoids re-shipping costs later.
Different buyer profiles approach the same product from different directions, and the search routes they use reflect it.
Catalog-driven distributors and parts platforms search by the reference itself: 52722-SM4-013 bump stop or 52722-SM4-013 supplier. This route gives the closest match because the number ties directly to tooling and dimensional records. When sending an inquiry, include the target quantity and packaging requirement so the factory can confirm mold availability and quote in one round.
Repair chains and regional wholesalers usually search vehicle-first: Honda strut bump stop, bump stop for Civic, or jounce bumper for Accord. Model-based searching works well, yet one Honda platform family can use several similar stops. Confirming the OE number or dimensions before ordering prevents mix-ups between visually close parts.
Suspension assemblers and engineering distributors sometimes work in reverse: they hold dimensions and material requirements but no reference number. In that case, quote the three key dimensions, the material, and the hardness if known. The factory can match an existing mold or open a custom one. The full shock absorber parts range from Bonpora covers related references, which simplifies consolidation for buyers sourcing several suspension lines together.
Bump stops operate in a demanding zone of the suspension: repeated high-strain compression, contamination from water and road salt, and wide temperature swings. Conventional rubber stops harden and crumble with age, and a cracked bump stop is a common workshop finding on older Honda vehicles.
Polyurethane microcellular foam behaves differently. Its closed-cell structure compresses progressively and recovers without permanent set, and it resists aging, ozone, and temperature extremes better than standard rubber. For the buyer, this means a longer shelf life in the warehouse and more consistent damping behavior across the service life of the part. The same material family runs across the Bonpora catalog, so batch-to-batch behavior stays predictable for repeat orders.
Sourcing direct from the manufacturing factory removes intermediate markup and shortens the communication path for technical questions. Bonpora supports OEM and custom programs alongside the standard catalog: private-label packaging on catalog references, modified designs with adjusted hardness or geometry, and completely new stops developed from a drawing or a physical sample. The engineering team reviews the drawing, confirms mold feasibility, samples the part, and validates dimensions before mass production. The workflow, from drawing review to branded export packaging, is described on the custom parts page. For program buyers, combining several Honda references into one container program keeps logistics simple and unit costs predictable.
Production runs under an IATF 16949 quality system. For bump stop manufacturing this covers incoming material verification for the polyurethane systems, in-process control of foaming parameters, and dimensional inspection of finished parts against the mold specification. Batch samples are checked for hardness and compression behavior so replacement batches behave consistently with earlier deliveries.
The part ships with a 1-year warranty covering manufacturing defects. Correct application to the intended fitment remains the responsibility of the buyer, which is another reason the verification step above matters. Standard supply uses neutral export packaging suitable for distributors who re-box under their own brand, and production plus delivery typically take 15-30 days depending on order size and season. Mixed loading with other suspension references is available for container programs.
The reference belongs to the Honda 52722 series of front strut bump stops, and the same family can be shared across models and model years. Confirm fitment by OE number, by dimensions (Φ12 x Φ46 x 103 mm), or by VIN before ordering. Send the reference and the team will check it against mold records.
Yes. Existing molds cover the standard range. If the requirement differs in size, hardness, or geometry, the custom program develops the part from a drawing or a physical sample, and mold opening and sampling timelines are confirmed case by case.
Catalog parts are available in distributor-friendly quantities, and production plus delivery typically run 15-30 days. Exact MOQ depends on the reference and the packaging choice; neutral export packaging ships fastest, while private-label packaging adds production time.
Check the three key dimensions first: rod hole diameter, outer diameter, and free height. Then compare the foam texture and the mounting method, through-rod versus cup type. If a sample or a dimensional drawing is provided, the factory confirms the match before quotation.
For pricing on Bonpora No. 4110046 (OE 52722-SM4-013), send the OE number, the target quantity, and the destination port to the sales team. OEM and custom design inquiries are welcome. Include a drawing or a sample description, and the team will respond with mold feasibility, unit pricing, and delivery terms for the target market.
