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A strut bump stop is one of those small parts that decides whether a suspension repair leaves the workshop finished or comes back as a repeat job within weeks. This page describes the Honda front strut bump stop referenced under OE number 51722-TF0-014 and Bonpora number 4110047, supplied wholesale and factory-direct from China. It covers what the part does, the specification data buyers check first, the Honda models it is catalogued for, and what importers, wholesalers, and distributors should confirm before committing to a volume order.
Also sold under the names jounce bumper, bump stopper, and suspension buffer, the part is a moulded elastomer sleeve that fits over the damper piston rod inside the front strut. During normal driving it hangs clear of the top mount. Under a hard compression event — a pothole, a speed bump, a fully loaded vehicle — it engages progressively and converts what would otherwise be a metal-to-metal impact into controlled resistance.
Elastomer parts age whether the car is driven or parked. Heat, ozone, road salt, and repeated compression cycles harden the material until it cracks and loses its progressive response. From that point the damper begins to bottom out and the damage spreads to the mount and the shock absorber. For the wider suspension range, see our auto parts catalogue.
The item described here is a front strut bump stop for Honda applications, produced in a dedicated auto parts factory in China and referenced under OE number 51722-TF0-014 and Bonpora number 4110047. The table below lists the data buyers normally request before asking for a wholesale quotation.
| Parameter | Value |
|---|---|
| Product name | Strut Bump Stop |
| OE number | 51722-TF0-014 |
| Bonpora no. | 4110047 |
| Fitment | Honda, front axle |
| Dimensions | Φ18.4 x Φ50.3 x 91.88 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 |
Φ18.4 mm is the inner bore that slides over the damper rod, Φ50.3 mm is the outer diameter of the elastomer body, and 91.88 mm is the free length. The bore decides whether the part can be assembled at all; the free length decides where in the stroke it starts to work. The roughly 92 mm free length matches the dimension published for the same reference by major European aftermarket brands, which is a useful cross-check when comparing quotations. A longer stop engages early and makes the ride firm, while a shorter one engages too late and lets the strut knock, so compare all three values against the part removed from the vehicle before approving any substitution.
Polyurethane suits this duty cycle well. Compared with conventional rubber it resists tearing and oil exposure better, holds its mechanical properties across a wider temperature range, and can be moulded to a controlled hardness so the compression curve stays progressive rather than abrupt. For compact Hondas in taxi, delivery, and family duty — the kind of use that dominates this segment — that consistency is what keeps replacement intervals predictable for the workshop.
In Honda part numbering, 51722 identifies a front suspension bump stopper, and the suffix after the hyphen is the model application code. Aftermarket catalogues list OE 51722-TF0-014 across the Jazz and Fit (GE, GG, GP series), the City (GM series, including the GAC-built saloons), the Insight (ZE), and the CR-Z (ZF), with equivalent items offered under the reference numbers of major European aftermarket brands. This sharing across models is common for Honda small-car platforms, but regional naming and mid-cycle running changes mean the application list should always be treated as guidance rather than a guarantee. The OE number moulded on the removed part, or the vehicle identification number, remains the most reliable basis for ordering.
Demand behind this reference usually comes from two buyer groups: distributors building a wholesale programme for the independent aftermarket, and workshop networks that buy front suspension parts in steady volumes. Both are served from the same tooling and quality system, which is what makes factory-direct wholesale supply attractive in this category.
An original-quality replacement reproduces the reference part where it counts: the same bore and free length, an equivalent material grade and hardness, and a compression curve close to the OE component. It does not carry the vehicle maker brand name, and it should not be presented as such — it is a replacement part manufactured to the original specification. For wholesale buyers this is the practical middle ground between dealer supply and unverified market alternatives.
Buying directly from the producing factory removes trading layers, which shows up in quotation stability at volume and in the ability to answer technical questions quickly: Shore hardness values, cure process, and dimensional inspection reports. It also makes private-label packaging and carton marking straightforward, which matters to distributors building their own suspension range under their own brand. If you are comparing suppliers, our auto parts sourcing team can review drawings, samples, and cross-reference lists alongside catalogue items.
Bump stops are a low-unit-value, high-turnover line that supports higher-margin suspension sales. Sourcing them well is mostly about batch consistency and documentation rather than the lowest quotation on the first order.
A factory with OEM and custom design capability can produce stops to a customer drawing or sample, including non-standard bore sizes, alternative hardness grades, and application-specific profiles. This suits distributors building a private-label range as well as specialists servicing vehicles with modified ride heights. Send the drawing together with the target annual volume so the quotation reflects tooling, material, and order size realistically.
For catalogue items held in stock, 15–30 days covers production and export preparation. Wholesale orders are packed in neutral export packaging by default, ready for relabelling or private-label cartons on request. New tooling adds development time, so plan the first order of a private-label line well ahead of the selling season, and confirm the shipping method and destination port when requesting the quotation.
A worn bump stop is often discovered during damper replacement, but it can also be diagnosed from the driver seat before the car goes on the lift.
On these Honda applications the stop sits on the front axle, one per side. Bump stops are normally replaced together with the strut mount and dust boot, since all three share the same access procedure and a similar service life. Replace both sides of the axle at the same time, support the suspension correctly before releasing fasteners, and torque the components with the vehicle at normal ride height. Compare the old elastomer part against the new item before installation to confirm that bore, diameter, and free length match the application.
Aftermarket catalogues list the reference for the Jazz and Fit (GE, GG, GP series), the City (GM series), the Insight (ZE), and the CR-Z (ZF), on the front axle. Because running changes and regional naming vary, confirm the application with the vehicle identification number or the OE number on the removed part before ordering, and ask the factory for a written cross-reference list covering the models you service.
A replacement manufactured to the original specification — matching bore, free length, material grade, and hardness — performs the same function as the OE part. Ask the factory for dimensional inspection data and material details so the comparison is documented rather than assumed.
Minimum order quantities depend on whether the item is a stocked catalogue reference or a custom moulding. Stocked references ship in wholesale quantities from current stock; private-label or custom profiles are quoted against tooling and an annual volume agreed with the factory. Send the target models and annual quantity to receive terms that match your programme.
Quoted delivery is 15–30 days for stock-referenced items, with neutral export packaging prepared for sea or air freight. Confirm the shipping method and destination port when requesting the quotation so the terms match your planning.
If you are sourcing strut bump stops for Honda applications in wholesale quantities, or planning a private-label suspension programme under your own brand, send the OE number, target models, and annual volume. The factory can confirm availability, provide dimensional and material data, and quote on neutral export packaging or private-label terms.
