{"product_id":"ohlins-stx-46-blackline-shock-absorber-bmw-r-ninet-pure-2016-2020-bm-491","title":"Öhlins STX 46 Blackline Shock Absorber BMW R NINET PURE (2016–2020) – BM 491","description":"\u003cp\u003eThe BMW R NINET PURE of 2016–2020 has its own Öhlins part number, and this is it: BM 491. The difference shows up in the second half of a fast road, when the standard unit has warmed through.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eÖhlins spring 21102-54 included\u003c\/li\u003e\n\u003cli\u003e53 mm of travel at the damper\u003c\/li\u003e\n\u003cli\u003eBuilt to 374 +10 \/ -2 mm installed length\u003c\/li\u003e\n\u003cli\u003eMonotube damper layout\u003c\/li\u003e\n\u003cli\u003eSpring rate as delivered: 140 N\/mm, matched to the R NINET PURE\u003c\/li\u003e\n\u003cli\u003eAdjustable overall length for ride-height and geometry changes\u003c\/li\u003e\n\u003cli\u003eGas-pressurised monotube damper with the reservoir integrated into the body\u003c\/li\u003e\n\u003cli\u003eBuilt for the BMW R NINET PURE (2016–2020); fits without modification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the STX 46 Blackline Range\u003c\/h2\u003e\u003cp\u003eRiders choose it when a gold shock would sit wrong against the bike's own colours, and it costs the same as the standard finish. Because it is the same unit underneath, servicing, spares and re-valving are identical to the standard STX 46. The 46 mm piston and the integrated reservoir carry over unchanged from the standard version.\u003c\/p\u003e\u003ch2\u003eHow Öhlins Builds It\u003c\/h2\u003e\u003cp\u003eProduction has stayed in Sweden since the company was founded in 1976. Anodising is hard-coat rather than decorative, which matters on a component exposed to road salt and stone chips. Öhlins sets a baseline for each part number on the machine it was developed on, so it works before anything is adjusted.\u003c\/p\u003e\u003ch2\u003eDamping Performance\u003c\/h2\u003e\u003cp\u003e374 +10 \/ -2 mm of adjustment turns ride height into a setting rather than a fixed dimension. 140 N\/mm is the rate Öhlins selected after testing on the R NINET PURE. Öhlins supplies spring 21102-54 with this unit. Piston diameter is 46 mm, which is the figure that decides how hard the oil has to be pushed. Preload is set separately again, and preload is what determines static sag rather than damping. Adjustment is by click rather than by feel, so a setting can be written down and returned to.\u003c\/p\u003e\u003ch2\u003eWhy This Machine Needs It\u003c\/h2\u003e\u003cp\u003eÖhlins covers the 5-year production run of this generation with a single part number, which means the mounting and the linkage stayed unchanged across it. Retro and heritage machines usually inherit their suspension specification from cost targets rather than from chassis development.\u003c\/p\u003e\u003ch2\u003eFitment and Compatibility\u003c\/h2\u003e\u003cp\u003eÖhlins part number BM 491 is the correct number for the BMW R NINET PURE as built 2016–2020. Nothing about it is generic — the mounting dimensions alone rule out a different model.\u003c\/p\u003e\u003ch2\u003eRoad Approval\u003c\/h2\u003e\u003cp\u003eRoad approval: ABE (Germany) for the BMW R NINET PURE. That means no TÜV appointment and no entry in the registration document — the paperwork comes in the box.\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 BM 491\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eFitment:\u003c\/em\u003e BMW R NINET PURE (2016–2020)\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eRoad Approval:\u003c\/em\u003e ABE (Germany)\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eMounting Position:\u003c\/em\u003e Hinten\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eLength:\u003c\/em\u003e 374 +10 \/ -2 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eStroke:\u003c\/em\u003e 53 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eSpring Rate:\u003c\/em\u003e 140 N\/mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003ePiston Diameter:\u003c\/em\u003e 46 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eSpring Part Number:\u003c\/em\u003e 21102-54\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Öhlins","offers":[{"title":"Default Title","offer_id":53658151616778,"sku":"BM 491","price":856.19,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/a_img-00001427_99ea2c4d-4f23-4f9e-9cad-fcd27996d440.png?v=1789562160","url":"https:\/\/inter-pace.com\/products\/ohlins-stx-46-blackline-shock-absorber-bmw-r-ninet-pure-2016-2020-bm-491","provider":"Inter-Pace","version":"1.0","type":"link"}