{"product_id":"ohlins-adjustment-screw-5-20-5-21819-01","title":"Öhlins Adjustment screw 5\/20.5 – 21819-01","description":"\u003cp\u003eAdjustment screw 5\/20.5, Öhlins part number 21819-01. Electronically controlled adjusters replace the needle with a solenoid but keep the same hydraulics.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDimension B 20.5 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21819-01\u003c\/li\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eDimension A 5 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere It Sits\u003c\/h2\u003e\u003cp\u003e21819-01 is the 5 mm, 20.5 mm version — Öhlins lists each size separately. Öhlins publishes the click count for each unit, and a rebuilt adjuster should return it. Hydraulic preload adjusters are sealed units and are replaced rather than opened. Needle and seat together meter the bleed flow; damage to either changes the whole adjustment range.\u003c\/p\u003e\u003ch2\u003eGenuine Service Part\u003c\/h2\u003e\u003cp\u003eÖhlins manufactures service parts on the same lines as production parts — there is no second quality. The part is identical to what Öhlins fits in production — same supplier, same specification. Tell us the damper's model designation and year and we will match the number for you. Order by part number — descriptions repeat across sizes, numbers do not.\u003c\/p\u003e\u003ch2\u003eIdentifying the Right Part\u003c\/h2\u003e\u003cp\u003eÖhlins identifies this position by the number 21819-01 in the exploded view for the unit it belongs to. The published dimensions are dimension a 5 mm, dimension b 20.5 mm — measure the old part against them if you are unsure. Click adjusters work through a needle in a seat; the detent spring gives the clicks their feel. Hydraulic preload adjusters are sealed units and are replaced rather than opened.\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 21819-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Adjustment Screws\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension A:\u003c\/em\u003e 5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eDimension B:\u003c\/em\u003e 20.5 mm\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":53652874494218,"sku":"21819-01","price":27.0,"currency_code":"QAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21819-01_309d28df-c5d9-4e74-b79e-f7d1e7c55c34.png?v=1788880300","url":"https:\/\/inter-pace.com\/en-qa\/products\/ohlins-adjustment-screw-5-20-5-21819-01","provider":"Inter-Pace","version":"1.0","type":"link"}