{"product_id":"motorex-racing-fork-oil-1-liter","title":"Motorex - Racing Fork Oil","description":"\u003ch1\u003eMotorex Racing Fork Oil \u003c\/h1\u003e\n\u003cdiv\u003e\n\u003cp data-path-to-node=\"1\"\u003e\u003cspan\u003eMotorex Racing Fork Oil is a high-performance suspension fluid engineered specifically for modern cartridge,\u003c\/span\u003e\u003cspan\u003e inverted (USD),\u003c\/span\u003e\u003cspan\u003e and conventional open-bath motorcycle forks.\u003c\/span\u003e\u003cspan\u003e Developed in direct collaboration with factory race teams and WP Suspension,\u003c\/span\u003e\u003cspan\u003e this fluid is formulated to withstand the extreme thermal loads and high shear forces generated within modern tight-tolerance suspension valving.\u003c\/span\u003e\u003cspan\u003e Under hard riding,\u003c\/span\u003e\u003cspan\u003e rapid fluid cycling across damping shims generates friction that can break down standard hydraulic oils,\u003c\/span\u003e\u003cspan\u003e resulting in air entrainment,\u003c\/span\u003e\u003cspan\u003e fading rebound,\u003c\/span\u003e\u003cspan\u003e and inconsistent compression damping.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003e\u003cspan\u003eThe Racing Fork Oil line incorporates Motorex’s proprietary \"3D Response Technology,\u003c\/span\u003e\u003cspan\u003e\" which utilizes a specialized molecular structure designed to absorb and distribute shock and shear loads across a three-dimensional grid rather than a traditional linear plane.\u003c\/span\u003e\u003cspan\u003e This formulation delivers exceptional thermal stability,\u003c\/span\u003e\u003cspan\u003e resists cavitation,\u003c\/span\u003e\u003cspan\u003e and ensures immediate air release to prevent foaming.\u003c\/span\u003e\u003cspan\u003e Surface-active friction modifiers minimize breakaway stiction between fork sliders,\u003c\/span\u003e\u003cspan\u003e internal bushings,\u003c\/span\u003e\u003cspan\u003e and oil seals,\u003c\/span\u003e\u003cspan\u003e providing supple initial stroke compliance and consistent front-end traction throughout extended motos and long off-road stages.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 data-path-to-node=\"3\"\u003eFeatures:\u003c\/h4\u003e\n\u003cul data-path-to-node=\"4\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,0,0\"\u003e\u003cb data-path-to-node=\"4,0,0\" data-index-in-node=\"0\"\u003e3D Response Technology:\u003c\/b\u003e\u003cspan\u003e Three-dimensional molecular architecture absorbs high mechanical shear forces and distributes damping loads evenly across shim stacks.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,1,0\"\u003e\u003cb data-path-to-node=\"4,1,0\" data-index-in-node=\"0\"\u003eLow Breakaway Friction (Anti-Stiction):\u003c\/b\u003e\u003cspan\u003e Minimizes static friction between stanchions,\u003c\/span\u003e\u003cspan\u003e bushings,\u003c\/span\u003e\u003cspan\u003e and wiper seals for immediate compliance over small chop and trail chatter.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,2,0\"\u003e\u003cb data-path-to-node=\"4,2,0\" data-index-in-node=\"0\"\u003eRapid Air Release \u0026amp; Anti-Foam:\u003c\/b\u003e\u003cspan\u003e Prevents micro-bubble aeration and cavitation across high-speed compression orifices,\u003c\/span\u003e\u003cspan\u003e eliminating damping fade.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,3,0\"\u003e\u003cb data-path-to-node=\"4,3,0\" data-index-in-node=\"0\"\u003eThermal Shear Stability:\u003c\/b\u003e\u003cspan\u003e High Viscosity Index (VI) maintains uniform hydraulic resistance across broad operating temperatures.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,4,0\"\u003e\u003cb data-path-to-node=\"4,4,0\" data-index-in-node=\"0\"\u003eElastomer Conditioning:\u003c\/b\u003e\u003cspan\u003e Protects NBR and FKM oil seals against hardening,\u003c\/span\u003e\u003cspan\u003e drying,\u003c\/span\u003e\u003cspan\u003e and micro-cracking to prevent fork seal weeping.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,5,0\"\u003e\u003cb data-path-to-node=\"4,5,0\" data-index-in-node=\"0\"\u003eWP Suspension OEM Development Partner:\u003c\/b\u003e\u003cspan\u003e Factory standard fill and recommended service fluid for WP XACT,\u003c\/span\u003e\u003cspan\u003e XPLOR,\u003c\/span\u003e\u003cspan\u003e and AER fork systems across KTM,\u003c\/span\u003e\u003cspan\u003e Husqvarna,\u003c\/span\u003e\u003cspan\u003e and GASGAS platforms.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,6,0\"\u003e\u003cb data-path-to-node=\"4,6,0\" data-index-in-node=\"0\"\u003eFully Miscible:\u003c\/b\u003e\u003cspan\u003e All viscosity grades can be intermixed in calculated ratios to produce precise intermediate weights for custom suspension tuning.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-path-to-node=\"5\"\u003eWhat's in the Box:\u003c\/h4\u003e\n\u003cul data-path-to-node=\"6\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,0,0\"\u003e\u003cspan\u003e1x Motorex Racing Fork Oil (1-Liter \/ 33.\u003c\/span\u003e\u003cspan\u003e8 fl oz Bottle)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,1,0\"\u003e\u003ci data-path-to-node=\"6,1,0\" data-index-in-node=\"0\"\u003e(Note: Select your required viscosity—2.5W, 4W, 5W, 7.5W, 10W, or 15W—from the variant dropdown menu before checkout).\u003c\/i\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-path-to-node=\"7\"\u003eViscosity Selection \u0026amp; Application Guide:\u003c\/h4\u003e\n\u003cul data-path-to-node=\"8\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,0,0\"\u003e\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"0\"\u003e2.5W:\u003c\/b\u003e\u003cspan\u003e Ultra-light fluid designed for closed-cartridge competition forks,\u003c\/span\u003e\u003cspan\u003e trials suspension,\u003c\/span\u003e\u003cspan\u003e and lightweight riders requiring minimal hydraulic drag and fast rebound response.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,1,0\"\u003e\u003cb data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"\u003e4W:\u003c\/b\u003e\u003cspan\u003e Factory OEM standard specification for modern WP XACT and AER closed-cartridge\/air forks.\u003c\/span\u003e\u003cspan\u003e Engineered specifically for tight-tolerance WP cartridge valving.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,2,0\"\u003e\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"\u003e5W:\u003c\/b\u003e\u003cspan\u003e Common factory replacement weight for Japanese closed-cartridge and dual-chamber forks (KYB SSS,\u003c\/span\u003e\u003cspan\u003e Showa Twin Chamber).\u003c\/span\u003e\u003cspan\u003e Delivers balanced,\u003c\/span\u003e\u003cspan\u003e all-around valving resistance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,3,0\"\u003e\u003cb data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"\u003e7.5W:\u003c\/b\u003e\u003cspan\u003e Standard specification for European open-bath enduro forks (WP XPLOR,\u003c\/span\u003e\u003cspan\u003e Marzocchi,\u003c\/span\u003e\u003cspan\u003e Sachs).\u003c\/span\u003e\u003cspan\u003e Provides added mid-stroke support and slower rebound control.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,4,0\"\u003e\u003cb data-path-to-node=\"8,4,0\" data-index-in-node=\"0\"\u003e10W:\u003c\/b\u003e\u003cspan\u003e Recommended for conventional damper-rod forks,\u003c\/span\u003e\u003cspan\u003e street applications,\u003c\/span\u003e\u003cspan\u003e and heavy dual-sport motorcycles (Suzuki DR-Z400,\u003c\/span\u003e\u003cspan\u003e Suzuki DR650,\u003c\/span\u003e\u003cspan\u003e Kawasaki KLR650) requiring firmer low-speed damping.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,5,0\"\u003e\u003cb data-path-to-node=\"8,5,0\" data-index-in-node=\"0\"\u003e15W:\u003c\/b\u003e\u003cspan\u003e Heavyweight damping fluid for vintage damper-rod forks,\u003c\/span\u003e\u003cspan\u003e classic street bikes,\u003c\/span\u003e\u003cspan\u003e or heavily loaded touring front ends requiring reduced brake dive and slower chassis pitch.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12\"\u003e\u003cb data-path-to-node=\"12\" data-index-in-node=\"0\"\u003eWP XACT Damping Calibration (4W vs. 5W):\u003c\/b\u003e\u003cspan\u003e On modern KTM,\u003c\/span\u003e\u003cspan\u003e Husqvarna,\u003c\/span\u003e\u003cspan\u003e and GASGAS motorcycles equipped with WP XACT or AER forks,\u003c\/span\u003e\u003cspan\u003e always follow the factory manual callout for 4W fluid.\u003c\/span\u003e\u003cspan\u003e While 5W is often treated as a universal fork oil weight,\u003c\/span\u003e\u003cspan\u003e running 5W in a system valved specifically for 4W increases low-speed damping firmness noticeably.\u003c\/span\u003e\u003cspan\u003e This causes sluggish rebound return over consecutive braking bumps and transfers excessive harshness into the rider's hands on square-edge rocks.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13\"\u003e\u003cb data-path-to-node=\"13\" data-index-in-node=\"0\"\u003eCartridge De-Aeration \u0026amp; Air Chamber Measurement:\u003c\/b\u003e\u003cspan\u003e Never measure fork oil volume solely by pouring in fluid ounces or cubic centimeters from a graduated cylinder.\u003c\/span\u003e\u003cspan\u003e Used forks retain oil inside cartridge valving cavities,\u003c\/span\u003e\u003cspan\u003e leading to mismatched oil heights between fork legs.\u003c\/span\u003e\u003cspan\u003e Always pump the inner damper rod slowly through its complete stroke 10 to 15 times until all hydraulic resistance is consistent and zero micro-bubbles emerge.\u003c\/span\u003e\u003cspan\u003e Then compress the fork leg fully (without the main spring installed) and measure down from the top edge of the outer tube to the oil surface using a dedicated syringe fluid level gauge.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14\"\u003e\u003cb data-path-to-node=\"14\" data-index-in-node=\"0\"\u003eLinear Miscibility for Custom Dampening:\u003c\/b\u003e\u003cspan\u003e All Motorex Racing Fork Oil viscosities share the identical chemical base and additive package,\u003c\/span\u003e\u003cspan\u003e allowing linear mixing.\u003c\/span\u003e\u003cspan\u003e If 4W is slightly too soft on high-speed compression but 5W feels harsh,\u003c\/span\u003e\u003cspan\u003e mix equal parts (50\/50) of 4W and 5W to produce a precise 4.\u003c\/span\u003e\u003cspan\u003e5W fluid.\u003c\/span\u003e\u003cspan\u003e Similarly,\u003c\/span\u003e\u003cspan\u003e a 50\/50 blend of 5W and 10W yields a 7.\u003c\/span\u003e\u003cspan\u003e5W fluid.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003ca title=\"Shop Motorex fork oil, engine oil and chemicals for motorcycle maintenance at TMBR MOTO\" href=\"https:\/\/www.tmbrmoto.com\/collections\/motorex\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0622\/5720\/1317\/files\/MOTOREX_BANNER.jpg?v=1767135539\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0622\/5720\/1317\/files\/MADE_IN_SWITZERLAND.jpg?v=1783056343\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!----\u003e","brand":"Motorex","offers":[{"title":"2.5W","offer_id":43986534105253,"sku":"MTRX-FRK-OIL-2-5","price":20.0,"currency_code":"USD","in_stock":true},{"title":"4W","offer_id":43986534138021,"sku":"MTRX-FRK-OIL-4","price":20.0,"currency_code":"USD","in_stock":true},{"title":"5W","offer_id":43986534170789,"sku":"MTRX-FRK-OIL-5","price":20.0,"currency_code":"USD","in_stock":true},{"title":"7.5W","offer_id":43986534203557,"sku":"MTRX-FRK-OIL-7-5","price":20.0,"currency_code":"USD","in_stock":true},{"title":"10W","offer_id":43986534236325,"sku":"MTRX-FRK-OIL-10","price":20.0,"currency_code":"USD","in_stock":true},{"title":"15W","offer_id":43986534269093,"sku":"MTRX-FRK-OIL-15","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/5720\/1317\/files\/Motorex_Racing_Fork_Oil_All.jpg?v=1793578642","url":"https:\/\/www.tmbrmoto.com\/products\/motorex-racing-fork-oil-1-liter","provider":"TMBR MOTO","version":"1.0","type":"link"}