{"product_id":"ohlins-countersunk-washer-21857-01","title":"Öhlins Countersunk washer – 21857-01","description":"\u003cp\u003eCountersunk washer, Öhlins part number 21857-01. A spacer that is a millimetre short changes the preload on a shim stack, and with it the damping.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eÖhlins part number 21857-01\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFunction\u003c\/h2\u003e\u003cp\u003eÖhlins publishes no separate dimension for this position, so the part number carries the identity. Circlips hold axial position under load; a sprung one lets the assembly walk. Retaining rings come in a groove-specific thickness — the next size does not hold. Öhlins gives every washer and spacer its own part number because its length or thickness is part of the internal geometry.\u003c\/p\u003e\u003ch2\u003eWhy the Original\u003c\/h2\u003e\u003cp\u003eÖhlins publishes dimensions for its service parts so a workshop can verify before it fits. Suspension is one of the few areas where the original part is genuinely the cheaper decision. We can supply the whole position from the drawing rather than the single piece if that is easier. If the unit is already apart, compare the published dimensions with the part in your hand.\u003c\/p\u003e\u003ch2\u003eIdentifying the Right Part\u003c\/h2\u003e\u003cp\u003eIf the unit is already open, compare the dimensions below with the part in your hand before ordering 21857-01. This position has no published dimension, so the part number is the only reliable identifier. Thread size and length identify the fastener; substituting a hardware-store equivalent is not sensible in a pressurised damper. These are the parts that are easy to lose on the bench and impossible to improvise afterwards.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eIf you would rather not open the damper yourself, we can do it — we are an authorised Öhlins service centre and rebuild these units as a matter of routine.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eBrand:\u003c\/em\u003e Öhlins\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003ePart Number:\u003c\/em\u003e 21857-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Washers\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCountry of Origin:\u003c\/em\u003e Sweden\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Öhlins","offers":[{"title":"Default Title","offer_id":53652889141514,"sku":"21857-01","price":11.7,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21857-01_a5da933d-d3a9-4b07-88ea-c3adbf7508fc.png?v=1788880348","url":"https:\/\/inter-pace.com\/products\/ohlins-countersunk-washer-21857-01","provider":"Inter-Pace","version":"1.0","type":"link"}