The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 21630-01 |
| Category | Fork Parts |
| Dimension A | 43 mm |
| Dimension B | 50 mm |
| Dimension C | 54 mm |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Fork leg outer 43/50/54/508, Öhlins part number 21630-01. Cartridge tubes sit inside the fork leg and do the actual damping.
Key Features
- Dimension C 54 mm
- Original Öhlins service part
- Dimension B 50 mm
- Öhlins part number 21630-01
- Dimension A 43 mm
What It Is
Öhlins publishes 43 mm, 50 mm, 54 mm for 21630-01 — the dimensions are the identity of the part. Outer tubes hold the bushings and the seal head, so their bore finish matters as much as the inner tube's outside. Fork legs are matched left and right on most Öhlins forks and are listed separately. Axle clamps are machined so the axle clamps without pinching the fork out of alignment.
Original Öhlins Part
A damper that can be rebuilt is a damper that stays on the bike; that is the whole argument for original service parts. Öhlins is one of the few suspension makers that still supplies every position in the exploded view as a single part. For a full rebuild, the seal kit plus the wear parts is usually the sensible order. Order by part number. The dimensions below are the ones Öhlins publishes for it.
How to Be Sure It Fits
21630-01 is the Öhlins number for this position — the same one printed in the service documentation. Öhlins states dimension a 43 mm, dimension b 50 mm, dimension c 54 mm for this number, and those figures are the deciding ones. Öhlins publishes tube diameters by fork model, and they are not interchangeable across the range. Axle clamps and lower legs are machined to hold the axle without distorting the fork.
Fitting and Setup Service
A damper rebuild is workshop work: it needs the unit dismantled, the shim stack rebuilt in the correct order and the gas charge reset. We are an authorised Öhlins service centre and do exactly that in house — send us the unit or ask us to fit the part with your order.
Specifications
- Brand: Öhlins
- Part Number: 21630-01
- Category: Fork Parts
- Dimension A: 43 mm
- Dimension B: 50 mm
- Dimension C: 54 mm
- Country of Origin: Sweden
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