{"product_id":"ohlins-adjustment-housing-nv17-21720-01","title":"Öhlins Adjustment housing NV17 – 21720-01","description":"\u003cp\u003eAdjustment housing NV17, Öhlins part number 21720-01. Hydraulic preload adjusters are sealed and pressurised; they are replaced as a unit.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21720-01\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. Compression and rebound adjusters are not interchangeable even when they look similar. Needle and seat together meter the bleed flow; damage to either changes the whole adjustment range. Hydraulic preload adjusters are sealed and pressurised; they are replaced as a unit.\u003c\/p\u003e\u003ch2\u003eOriginal Öhlins Part\u003c\/h2\u003e\u003cp\u003eAn original part keeps the unit within its published specification; a near-equivalent quietly moves it. Every part in this catalogue is one Öhlins fits itself during assembly and service. Öhlins parts are unit-specific: a close dimension is not a substitute. Öhlins numbers do not follow a logic you can guess — always read them from the documentation.\u003c\/p\u003e\u003ch2\u003eGetting the Number Right\u003c\/h2\u003e\u003cp\u003eThe reliable route is the exploded drawing: find the position, read the number, order it — 21720-01 in this case. Öhlins does not publish a dimension here — go by the number and the exploded view. Detent balls and springs are separate parts because they wear before the housing does. Preload adjusters carry the full spring force and are built accordingly.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eA 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.\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 21720-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Adjustment Housings\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":53652797063434,"sku":"21720-01","price":47000.0,"currency_code":"CDF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21720-01_d01de670-51c9-4bdd-9f39-e2fbd37514e0.png?v=1788880139","url":"https:\/\/inter-pace.com\/en-cd\/products\/ohlins-adjustment-housing-nv17-21720-01","provider":"Inter-Pace","version":"1.0","type":"link"}