{"product_id":"f43-trail-tune-lsc-246-mm-travel-1","title":"Sirris F43 Fork | Trail Tune | Surron Ultra Bee","description":"\u003ch1 style=\"text-align: center;\" data-start=\"322\" data-end=\"366\"\u003eSurron Ultra Bee\u003c\/h1\u003e\n\u003ch1 style=\"text-align: center;\" data-start=\"322\" data-end=\"366\"\u003eF43 Trail Tune Fork | LSC | 246mm Travel\u003c\/h1\u003e\n\u003cp data-start=\"368\" data-end=\"693\"\u003e\u003cstrong data-start=\"368\" data-end=\"447\"\u003eDominate the trails with the fork built for speed, control, and confidence.\u003c\/strong\u003e The \u003cstrong data-start=\"452\" data-end=\"470\"\u003eF43 Trail Tune\u003c\/strong\u003e isn’t just suspension—it’s your secret weapon. Designed for aggressive riders who want sporty support across gnarly terrain, this fork is versatile, predictable, and ready to smash lap times or shred all-day singletrack.\u003c\/p\u003e\n\u003cp data-start=\"695\" data-end=\"1015\"\u003eWith \u003cstrong data-start=\"700\" data-end=\"725\"\u003e246mm of plush travel\u003c\/strong\u003e, closed-cartridge damping, and a hydraulic bump stop, the F43 soaks up big hits while keeping things buttery smooth when you’re pushing limits. Whether you’re an e-moto weekend warrior or a pro chasing podiums, this fork delivers a ride that’s fast, supportive, and confidence-inspiring.\u003c\/p\u003e\n\u003cp data-start=\"695\" data-end=\"1015\"\u003eComplete your ride with the \u003ca href=\"https:\/\/electrixmotoco.com\/products\/r46-trail-tune-lsc?_pos=1\u0026amp;_sid=0eddeda67\u0026amp;_ss=r\u0026amp;variant=42290983927883\" rel=\"noopener\" target=\"_blank\"\u003eSirris R46 Trail Tune Shock\u003c\/a\u003e!\u003c\/p\u003e\n\u003ch2 data-start=\"1022\" data-end=\"1042\"\u003eFeatures 🏁\u003c\/h2\u003e\n\u003cul data-start=\"1043\" data-end=\"1529\"\u003e\n\u003cli data-start=\"1043\" data-end=\"1125\"\u003e\n\u003cp data-start=\"1045\" data-end=\"1125\"\u003e\u003cstrong data-start=\"1045\" data-end=\"1065\"\u003eTrail Tune Setup\u003c\/strong\u003e – Sporty \u0026amp; aggressive valving for all-terrain performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1126\" data-end=\"1203\"\u003e\n\u003cp data-start=\"1128\" data-end=\"1203\"\u003e\u003cstrong data-start=\"1128\" data-end=\"1155\"\u003eClosed Cartridge System\u003c\/strong\u003e – Consistent damping that won’t fade mid-ride\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1204\" data-end=\"1269\"\u003e\n\u003cp data-start=\"1206\" data-end=\"1269\"\u003e\u003cstrong data-start=\"1206\" data-end=\"1229\"\u003eHydraulic Bump Stop\u003c\/strong\u003e – Smooth landings on the biggest hits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1270\" data-end=\"1353\"\u003e\n\u003cp data-start=\"1272\" data-end=\"1353\"\u003e\u003cstrong data-start=\"1272\" data-end=\"1296\"\u003eHigh-Tensile Springs\u003c\/strong\u003e – Lightweight yet durable for long-lasting performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1354\" data-end=\"1429\"\u003e\n\u003cp data-start=\"1356\" data-end=\"1429\"\u003e\u003cstrong data-start=\"1356\" data-end=\"1376\"\u003eFully Adjustable\u003c\/strong\u003e – Compression, rebound \u0026amp; preload for custom tuning\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1430\" data-end=\"1529\"\u003e\n\u003cp data-start=\"1432\" data-end=\"1529\"\u003e\u003cstrong data-start=\"1432\" data-end=\"1452\"\u003eBuilt for E-Moto\u003c\/strong\u003e – Handles heavy builds, upgraded controllers, and aggressive riding styles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1536\" data-end=\"1564\"\u003eRider Weight Options ⚡️\u003c\/h2\u003e\n\u003cp data-start=\"1565\" data-end=\"1649\"\u003eSirris offers \u003cstrong data-start=\"1579\" data-end=\"1606\"\u003esix rider weight ranges\u003c\/strong\u003e (without gear—15 lbs is added for gear):\u003c\/p\u003e\n\u003cul data-start=\"1651\" data-end=\"1912\"\u003e\n\u003cli data-start=\"1651\" data-end=\"1692\"\u003e\n\u003cp data-start=\"1653\" data-end=\"1692\"\u003e130–160 lbs → Light (4.0\/4.0 springs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1693\" data-end=\"1735\"\u003e\n\u003cp data-start=\"1695\" data-end=\"1735\"\u003e160–210 lbs → Medium (4.8\/4.4 springs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1736\" data-end=\"1777\"\u003e\n\u003cp data-start=\"1738\" data-end=\"1777\"\u003e210–230 lbs → Heavy (5.0\/4.8 springs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1778\" data-end=\"1821\"\u003e\n\u003cp data-start=\"1780\" data-end=\"1821\"\u003e230–250 lbs → X Heavy (5.0\/5.0 springs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1822\" data-end=\"1866\"\u003e\n\u003cp data-start=\"1824\" data-end=\"1866\"\u003e250–280 lbs → XX Heavy (5.4\/5.0 springs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1867\" data-end=\"1912\"\u003e\n\u003cp data-start=\"1869\" data-end=\"1912\"\u003e280–350 lbs → XXX Heavy (5.8\/5.4 springs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1914\" data-end=\"2010\"\u003e👉 Pro tip: Aggressive riders may want to size up one weight class and adjust preload for sag.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1914\" data-end=\"2010\"\u003e \u003c\/p\u003e\n\u003ch2 class=\"majortitle in-content h1\" style=\"text-align: center;\"\u003eTUNING DETAILS \u0026amp; RIDER WEIGHT RANGE\u003c\/h2\u003e\n\u003cdiv class=\"rte lightly-spaced-row large-text\"\u003e\n\u003cp style=\"text-align: center;\"\u003eListed weight ranges are body weight without riding gear (15 pounds of riding gear is calculated into the weight ranges).\u2028\u003cbr\u003eWeights of upgrades (battery, controller, etc) need to be added to rider weight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp data-start=\"1914\" data-end=\"2010\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0588\/2521\/1979\/files\/tuning-details-trailtune_244ec3aa-424c-4d9f-a589-5241d7a696e9.webp?v=1756737067\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003cp data-start=\"1914\" data-end=\"2010\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"1914\" data-end=\"2010\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0588\/2521\/1979\/files\/tune-chart-3_f6b62455-a9a4-442f-a70b-1c8541eecf56.webp?v=1756737067\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTRAIL TUNE Starting point notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003eAssuming neutral riding position, with 15 lbs gear on.\u003cbr\u003eWeights of upgrades (battery, controller, etc) to be added to rider weight\u003cbr\u003eStock bike with 18\/21 wheels\u003cbr\u003eRiders close to a weight cut off need to adjust preload to compensate\u003cbr\u003eVery aggressive\/pro riders to consider +1 weight class and drop preload to get sag, especially if in the upper range.\u003cbr\u003eRider preference and riding conditions may require a different setup\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eExample:\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e190 lb rider without gear, 20 additional lbs with upgraded controller\/battery\u003cbr\u003eWeight calculation 190+20 = 210\u003cbr\u003eAggressive rider = Heavy tune with low preload\u003cbr\u003eRelaxed rider = Medium tune with high preload\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSETTINGS NOTE:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eSettings are number of clicks from the closed position (full clockwise). Once they are in the closed position, back them out (counter-clockwise) according to the number of clicks indicated in the chart above to get you to factory settings.\u003c\/p\u003e\n\u003cp data-start=\"2769\" data-end=\"2900\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e*OIL NOTE:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003eSirris uses Shell Tellus S2 VX15 (5wt) in the fork cartridge and Shell Tellus S2 VX68 (20wt) as the bath oil. These are cross compatible with other high quality 5wt and 20wt suspension fluids.  Sirris uses a semi-synthetic 2.5wt oil in the shock that is also compatible with other high quality 2.5wt aftermarket suspension fluids. You can use 5wt\/20wt oils of your preference, Lubefinder.com can be used to source the fork oils. KYB K2C can be used in the shock and has wide availability.\u003c\/span\u003e\u003c\/p\u003e","brand":"Sirris","offers":[{"title":"Light (130-160 lb) \/ Trail \/ LSC","offer_id":42290984616011,"sku":"430-99-001-LTE-XX 43MM USD, 856MM X 246MM, 25MM OFFSET, SURRON UB AM, LTE","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"Medium (160-210 lb) \/ Trail \/ LSC","offer_id":42290984648779,"sku":"430-99-001-MED-XX  43MM USD, 856MM X 246MM, 25MM OFFSET, SURRON UB AM, MED","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"Heavy (210-230 lb) \/ Trail \/ LSC","offer_id":42290984681547,"sku":"430-99-001-HVY-XX  43MM USD, 856MM X 246MM, 25MM OFFSET, SURRON UB AM, HVY","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"X Heavy (230-250 lb) \/ Trail \/ LSC","offer_id":42290984714315,"sku":"430-99-001-1XH-XX  43MM USD, 856MM X 246MM, 25MM OFFSET, SURRON UB AM, 1XH","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"XX Heavy (250-280 lb) \/ Trail \/ LSC","offer_id":42290984747083,"sku":"430-99-001-2XH-XX  43MM USD, 856MM X 246MM, 25MM OFFSET, SURRON UB AM, 2XH","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"XXX Heavy (280-350 lb) \/ Trail \/ LSC","offer_id":42290984779851,"sku":"430-99-001-3XH-XX  43MM USD, 856MM X 246MM, 25MM OFFSET, SURRON UB AM, 3XH","price":2250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/2521\/1979\/files\/sirris-F43-suspension-fork-front-trail_78149b5e-fdb0-4d72-b39d-b4b49e6bc97f.jpg?v=1775572939","url":"https:\/\/electrixmotoco.com\/products\/f43-trail-tune-lsc-246-mm-travel-1","provider":"Electrix Moto","version":"1.0","type":"link"}