{"product_id":"ohlins-guide-ring-31-41-5-21977-01","title":"Öhlins Guide ring 31\/41.5 – 21977-01","description":"\u003cp\u003eGuide ring 31\/41.5, Öhlins part number 21977-01. Both diameters and the length are specification rather than approximation.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOriginal Öhlins service part\u003c\/li\u003e\n\u003cli\u003eInner Diameter 31 mm\u003c\/li\u003e\n\u003cli\u003eÖhlins part number 21977-01\u003c\/li\u003e\n\u003cli\u003eOuter Diameter 41.5 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere It Sits\u003c\/h2\u003e\u003cp\u003eÖhlins gives it as 31 mm, 41.5 mm; nothing about that is approximate. Guides and sleeves set the internal alignment of a cartridge. Inner and outer diameter both matter; a bushing that is a little loose does more damage than none at all. Play at a bushing lets the shaft run off centre and the seal wears unevenly.\u003c\/p\u003e\u003ch2\u003eWhy the Original\u003c\/h2\u003e\u003cp\u003eSuspension is one of the few areas where the original part is genuinely the cheaper decision. The tolerances here are the ones the unit was assembled to, not a pattern equivalent's interpretation of them. Where a number has been superseded, Öhlins states the replacement — we pass that on. We can supply the whole position from the drawing rather than the single piece if that is easier.\u003c\/p\u003e\u003ch2\u003eHow to Be Sure It Fits\u003c\/h2\u003e\u003cp\u003eÖhlins identifies this position by the number 21977-01 in the exploded view for the unit it belongs to. Check inner diameter 31 mm, outer diameter 41.5 mm against what you have removed; a close size is not the same part. Öhlins uses PTFE-coated bushings for a low breakaway force. Bushings take the side load so the seal only has to seal.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eÖhlins recommends that its units are serviced by an authorised centre. We are one: rebuild, revalve and setup all happen in our own workshop.\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 21977-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCategory:\u003c\/em\u003e Guides\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eInner Diameter:\u003c\/em\u003e 31 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eOuter Diameter:\u003c\/em\u003e 41.5 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":53653161345290,"sku":"21977-01","price":618.0,"currency_code":"MAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/21977-01_096579de-428c-4872-8daa-72d3b6da77a4.png?v=1788880605","url":"https:\/\/inter-pace.com\/en-ma\/products\/ohlins-guide-ring-31-41-5-21977-01","provider":"Inter-Pace","version":"1.0","type":"link"}