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A strut bump stop is a small moulding that decides how a Honda behaves in the last few centimetres of suspension travel. This page covers the strut bump stop supplied against Honda OE number 51722-T2A-A01 — a microcellular polyurethane jounce bumper measuring Φ24.90 x Φ59.5 x 84.8 mm and listed under Bonpora No. 4110098. It is written for importers, wholesale distributors, workshop chains and buying offices that need consistent stock of a known part number, priced at container volume and packed for export, rather than a one-off retail purchase.
| Item | Detail |
|---|---|
| Product name | Strut bump stop (suspension jounce bumper / buffer) |
| Bonpora No. | 4110098 |
| OE reference | 51722-T2A-A01 |
| Fitment | Honda applications; confirm by OE number |
| Size | Φ24.90 x Φ59.5 x 84.8 mm |
| Material | Polyurethane (microcellular PU) |
| Country of origin | China |
| Warranty | 1 year |
| Delivery time | 15-30 days |
| Packaging | Neutral export packaging |
| Custom service | OEM and custom design support |
Dimensions are nominal for the standard moulding. When the part is being bought to replace a worn original, measure the used bumper at its height, top bore and base diameter and compare the profile before releasing a purchase order, because two bumpers that share a mounting point can still differ in height. If the marking on the old part is no longer readable, the OE reference is the most reliable identifier to quote on an enquiry.
A jounce bumper is not a spring and it is not in contact during normal driving. It engages only when the suspension compresses far enough that the damper alone would reach the end of its stroke. From that point the microcellular structure compresses and stiffens progressively, so the load rises smoothly instead of arriving as a single hard impact. That progression is what keeps a pothole, a kerb or a fully loaded rear corner from travelling through the body structure.
If the bumper is perished, hardened or missing, the damper rod can bottom out and the upper mount begins to take repeated loads it was never designed for. On a high-mileage vehicle this usually appears first as noise over rough surfaces, then as a leaking damper or a torn mount. Replacing the bumper together with the surrounding shock absorber parts is the practical repair sequence and the one workshop chains prefer to stock for.
Too soft and the bumper stops controlling the final stroke; too firm and it behaves like a solid stop, transferring the shock into the mount and the body shell. Because the original part was chosen for a specific vehicle mass and suspension geometry, matching height, bore and material hardness matters more than matching the exterior appearance.
Wholesale buyers are rarely buying one bumper — they are buying a part number they intend to stock for years. Producing against a fixed mould means the tenth shipment is dimensionally the same as the first, which is what allows a distributor to sell the part under its own catalogue reference without handling returns for variation.
Neutral export packaging is standard, so cartons can be loaded directly for a mixed container without repacking at the port of arrival. Because the same factory produces a range of bump stops in different sizes, several references can be combined in one shipment, which keeps freight cost per unit down and reduces the number of supplier records a buyer has to manage.
Unit price is quoted against the annual or per-container quantity rather than a single piece, and a sample can be sent ahead so the part can be measured and fitted before the production order is placed. The wider jounce bumper range, including the sizes around this reference, is listed under polyurethane bump stops.
Quoting "51722-T2A-A01 bump stop" or "51722-T2A-A01 jounce bumper" is the fastest route for both sides, because the OE reference identifies the geometry regardless of how the part is catalogued in a local system. An enquiry that carries the OE number can usually be answered with a cross-reference list instead of a photograph.
Buyers working from the vehicle rather than the number search by model and then look for the bumper. In those cases it helps to quote both the OE reference and the model year range, since a bumper is often shared across several variants while the damper fitted next to it is not.
Enquiries such as "polyurethane bump stop 24.90 x 59.5 x 84.8" come from buyers who already hold a drawing or a measurement and need the moulding to match it. Supplying the three dimensions along with the OE number shortens the matching step considerably and avoids a wrong-size shipment.
Phrases like "strut bump stop manufacturer China" or "honda bump stop wholesale supplier" are capability comparisons rather than single-part requests. The questions that decide these enquiries are usually whether the supplier controls its own moulding and tooling, whether a sample can be sent before a production order, and whether the same channel can handle a standard part and a development project.
Development enquiries arrive as a drawing, a 3D file, a used sample or a photograph with dimensions. A used sample is the most reliable input, because it captures the compression behaviour as well as the outer geometry. The scope of what can be adapted — height, bore, density, hardness and marking — is described under custom parts.
For a distributor running several suspension lines, ordering the bumper alongside related hardware shortens the receiving process and reduces the number of shipment records to keep. The full catalogue entry for this part and the surrounding range sits in the product catalogue.
It is an OE-equivalent replacement produced to the same geometry as Honda OE 51722-T2A-A01. The moulding is made in our own factory in China rather than sourced from another supplier, so the same tool serves an OE-service channel and a general aftermarket channel. Buyers who need to demonstrate equivalence to a customer can request the dimensional report and material data for the batch.
Start with the OE number, then check the three dimensions against the vehicle application. If the number is no longer readable on the old part, measure the height, the top bore and the base diameter and compare them with the figures on this page. A photograph of the used bumper alongside those measurements is usually enough for the application to be confirmed.
Small trial quantities can be quoted so the part can be validated on the vehicle first. Wholesale pricing applies from the volume you expect per year or per container. Standard production follows a 15-30 day delivery window after the drawing or sample is confirmed, and a new mould adds a tooling and first-article stage before the run is scheduled.
Yes. Neutral export packaging is standard, and branded cartons or labels can be produced against an approved artwork file. This lets a distributor hold the part under its own reference while another customer receives the identical moulding in plain packaging from the same production line.
If you are stocking a strut bump stop for Honda applications, or you need a reliable replacement for OE 51722-T2A-A01 with the same fitted dimensions, send the part number, the quantity you expect per year or per container, and the packaging or branding you require. A BONPORA engineer will confirm the match against Bonpora No. 4110098, advise on any customisation needed, quote the unit price at your volume and give an indicative lead time, so the part can be worked into your next buying cycle.
