{"product_id":"ohlins-shock-spring-90-n-mm-160-mm-57-mm-01091-29","title":"Öhlins Shock Spring 90 N\/mm \/ 160 mm \/ Ø 57 mm – 01091-29","description":"\u003cp\u003eÖhlins part number 01091-29 is a shock absorber spring rated at 90 N\/mm, 160 mm long with a 57 mm inner diameter. A rear spring matched to rider and load keeps the chassis attitude where the factory intended it.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eÖhlins part number 01091-29\u003c\/li\u003e\n\u003cli\u003eFree length 160 mm\u003c\/li\u003e\n\u003cli\u003e78 mm of usable stroke\u003c\/li\u003e\n\u003cli\u003eInner diameter 57 mm\u003c\/li\u003e\n\u003cli\u003ePowder-coated yellow\u003c\/li\u003e\n\u003cli\u003eStraight-wound, constant rate\u003c\/li\u003e\n\u003cli\u003eMeasured spring rate 90 N\/mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eManufacture and Tolerance\u003c\/h2\u003e\u003cp\u003eEach spring is set before it is measured, so it will not settle and lose rate in service. Öhlins sets a baseline for each part number on the machine it was developed on, so it works before anything is adjusted. Shafts are hardened and surface-treated so the seal has a consistent surface to run against.\u003c\/p\u003e\u003ch2\u003eThe Numbers That Matter\u003c\/h2\u003e\u003cp\u003eÖhlins holds the free length at 160 mm and the inner diameter at 57 mm across this rate range, so moving up or down a rate changes nothing about the installation.\u003c\/p\u003e\u003ch2\u003eChoosing 90 N\/mm\u003c\/h2\u003e\u003cp\u003eFirm rates trade some small-bump comfort for support — the right trade on a good surface at speed. If the suspension bottoms out or the geometry collapses under load, this is the direction to go. Firm rates also suit machines carrying luggage as a matter of course. Ride quality on the road is decided by rate first and damping second.\u003c\/p\u003e\u003ch2\u003eHow a Rear Spring Works\u003c\/h2\u003e\u003cp\u003eStatic sag at the rear sets the whole chassis attitude — get it wrong and the front geometry goes with it. Preload adjusts sag within a rate; it does not change the rate, and no amount of it will rescue a spring that is wrong. Adding a pillion or luggage changes the rear load enough that the standard rate stops working properly.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eNothing about the installation changes across a rate range: the mounting, the length and the bore stay the same. A spring is one of the few suspension parts that is genuinely interchangeable: same bore, same free length, and it goes in. Öhlins offers rates in defined steps so a change can be made in one direction at a time rather than by guesswork.\u003c\/p\u003e\u003ch2\u003eInstallation\u003c\/h2\u003e\u003cp\u003eÖhlins supplies a setting sheet with the springs; the numbers on it assume the specified oil. If the fork has not been serviced recently, bushes and seals are worth replacing while it is apart. Note the original oil level before draining — it is a useful reference even when Öhlins specifies its own.\u003c\/p\u003e\u003ch2\u003eRoad Approval\u003c\/h2\u003e\u003cp\u003eRoad approval: none is issued for springs as such — they replace an existing component of the same function. Any model-specific approval is listed under Applications.\u003c\/p\u003e\u003ch2\u003eFitting and Setup Service\u003c\/h2\u003e\u003cp\u003eThis is not a part to rush. Öhlins recommends installation by an authorised service centre, and we are an authorised Öhlins service centre — fitting, servicing and setup all happen here. Get in touch if you would like the work done with the 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 01091-29\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eSpring Rate:\u003c\/em\u003e 90 N\/mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eFree Length:\u003c\/em\u003e 160 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eInner Diameter:\u003c\/em\u003e 57 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eStroke:\u003c\/em\u003e 78 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eConstruction:\u003c\/em\u003e Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eFinish:\u003c\/em\u003e Powder-coated yellow\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":53645332676874,"sku":"01091-29","price":276.0,"currency_code":"QAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/RearOhlinsSpring_6a4207b2-d8cd-420e-ae96-7b0658e7df5c.png?v=1788866627","url":"https:\/\/inter-pace.com\/en-qa\/products\/ohlins-shock-spring-90-n-mm-160-mm-57-mm-01091-29","provider":"Inter-Pace","version":"1.0","type":"link"}