{"product_id":"f43-cmx-tune-tool-free-lsc-220-mm-travel-e-ride-pro-ss-3-0","title":"Sirris F43 CMX Tune 220mm Fork | Tool free LSC | for E-Ride Pro SS 3.0","description":"\u003ch1\u003eSirris F43 CMX 220mm Tool-Free LSC Fork | By Sirris Suspension | For E-Ride Pro SS 3.0\u003c\/h1\u003e\n\u003ch2\u003eBuilt to Dominate Any Terrain, Any Time\u003c\/h2\u003e\n\u003cp\u003eAt REV Rides we work with a lot of suspension upgrades, and the \u003cstrong\u003eSirris F43 CMX Fork\u003c\/strong\u003e is easily one of the most impressive compact e-moto forks available today. Designed specifically for platforms like the \u003cstrong\u003eE-Ride Pro SS 3.0\u003c\/strong\u003e, this fork delivers full-size motocross level performance in a chassis optimized for lightweight electric bikes.\u003c\/p\u003e\n\u003cp\u003eThe F43 CMX combines an oversized \u003cstrong\u003e43mm upside-down race chassis\u003c\/strong\u003e with Sirris’ proprietary \u003cstrong\u003eCMX tuned closed cartridge damping system\u003c\/strong\u003e. The result is razor sharp handling, incredible front end confidence, and consistent control when riding aggressively on trails, tracks, or rough terrain. With \u003cstrong\u003e220mm of suspension travel\u003c\/strong\u003e, tool free compression adjustment, and race grade materials throughout the fork, this is a serious upgrade over stock suspension.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/n4_QaBwQrRE?si=6srx8KQMC7FEOymB\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eSirris started with their race-proven F43 platform and resized it specifically for compact electric motos. The \u003cstrong\u003e775mm chassis length\u003c\/strong\u003e, oversized stanchions, and billet clamps create a stronger and more planted front end while maintaining the agility these bikes are known for. The design focuses on eliminating flex, improving durability, and delivering predictable suspension performance even when the bike is pushed hard.\u003c\/p\u003e\n\u003ch3\u003eOversized Chassis Designed to Outperform\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e43mm hard chrome stanchions\u003c\/strong\u003e resist flex, dents, and wear\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7XXX series hard anodized uppers\u003c\/strong\u003e maximize strength and durability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e775mm extended fork length\u003c\/strong\u003e creates a longer and more stable front end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e220mm travel\u003c\/strong\u003e provides 20mm more travel than stock suspension\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBillet aluminum triple clamps\u003c\/strong\u003e increase stiffness and reduce twisting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e178mm fork spacing\u003c\/strong\u003e allows nearly unlimited tire choices\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect mount stem compatibility\u003c\/strong\u003e improves cockpit stiffness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra stiff chromoly race axle\u003c\/strong\u003e increases steering precision and front end feel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotorcycle style top cap\u003c\/strong\u003e improves steering bearing tension control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaceable brake mounts and wheel spacers\u003c\/strong\u003e allow brake and wheel upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis design focuses on more than just stiffness. The F43 CMX is built to improve balance, soak up hard impacts, and maintain long term durability for riders pushing higher speeds and rougher terrain.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/y8ZjgHK3_Vc?si=3FkKGJa3XNa6oJMZ\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cdiv class=\"product-block product-block--tab\"\u003e\n\u003cdiv class=\"collapsibles-wrapper collapsibles-wrapper--border-bottom\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eRace Grade CMX Closed Cartridge Damping\u003c\/h3\u003e\n\u003cp\u003eAt the core of the fork is the \u003cstrong\u003eCMX tuned symmetrical closed cartridge damper\u003c\/strong\u003e. This advanced system provides professional level damping performance with independent oil circuits that separate lubrication and damping oil. This design helps maintain consistent performance even during long aggressive riding sessions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCMX Compact Motocross Tune\u003c\/strong\u003e designed for aggressive riding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSymmetrical closed cartridge design\u003c\/strong\u003e delivers fade free damping\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndependent oil circuits\u003c\/strong\u003e isolate damping and lubrication oil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh flow pistons\u003c\/strong\u003e with fully tunable compression and rebound valving\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydraulic bottom out control\u003c\/strong\u003e protects against harsh landings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHard anodized internal components\u003c\/strong\u003e reduce wear and increase longevity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Daido bushings and NOK MX seals\u003c\/strong\u003e ensure smooth operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe CMX tuning delivers a planted and predictable ride feel. From aggressive trail riding to high speed track laps, the fork stays composed and easy to tune for rider preference.\u003c\/p\u003e\n\u003ch3\u003eTool-Free Compression Adjustment\u003c\/h3\u003e\n\u003cp\u003eThe F43 CMX features \u003cstrong\u003etool free compression adjusters\u003c\/strong\u003e, allowing riders to quickly adjust suspension settings without tools. With nearly \u003cstrong\u003e30 clicks of external adjustment\u003c\/strong\u003e, dialing in the fork for different terrain or riding styles is fast and simple.\u003c\/p\u003e\n\u003ch3\u003eDirect Mount Stem System\u003c\/h3\u003e\n\u003cp\u003eThe Sirris steerer tube and motorcycle style top cap system are designed for \u003cstrong\u003edirect mount stems\u003c\/strong\u003e. This setup improves cockpit stiffness and helps maintain consistent steering bearing torque, similar to larger motocross bikes.\u003c\/p\u003e\n\u003cp\u003eThe stock \u003cstrong\u003eE-Ride Pro stem is not compatible\u003c\/strong\u003e because the Sirris steerer tube cannot be clamped. We recommend using a \u003cstrong\u003eWarp 9 direct mount stem\u003c\/strong\u003e or the \u003cstrong\u003eHeavy Hitter Adjustable Billet Display Mount by GritShift\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eOptional Drop Clamp for Big Wheel Builds\u003c\/h3\u003e\n\u003cp\u003eThe optional \u003cstrong\u003edrop clamp\u003c\/strong\u003e raises the front end an additional \u003cstrong\u003e25mm\u003c\/strong\u003e, extending fork length to approximately \u003cstrong\u003e800mm\u003c\/strong\u003e. This allows riders to run a \u003cstrong\u003e21 inch front wheel\u003c\/strong\u003e while maintaining proper bike balance when paired with longer rear suspension.\u003c\/p\u003e\n\u003ch3\u003eAxle and Brake Mount System\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUltra stiff chromoly axle improves steering precision\u003c\/li\u003e\n\u003cli\u003eReplaceable caliper mount brackets allow brake upgrades\u003c\/li\u003e\n\u003cli\u003eDesigned for \u003cstrong\u003e220mm brake rotor setups\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAll Sirris brake brackets are designed for 220mm rotors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArchitecture:\u003c\/strong\u003e Upside Down Fork\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel:\u003c\/strong\u003e 220 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree Length:\u003c\/strong\u003e 775 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Length with Drop Clamp:\u003c\/strong\u003e ~800 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFork Spacing:\u003c\/strong\u003e 178 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4 kg per leg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStanchions:\u003c\/strong\u003e Ø43 mm high tensile steel, hard chrome\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Tubes:\u003c\/strong\u003e Seamless 7050 aluminum, Type III hard anodized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrop Outs:\u003c\/strong\u003e 6061 aluminum, Type II anodized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxle:\u003c\/strong\u003e Ultra high tensile hard chromed axle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple Clamps:\u003c\/strong\u003e Billet 6061 aluminum, Type II anodized (Black or Blue)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteer Tube:\u003c\/strong\u003e Seamless 7050 aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamping:\u003c\/strong\u003e Symmetrical adjustable closed cartridge with modified IFP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompression Adjustment:\u003c\/strong\u003e External tool free LSC adjuster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRebound:\u003c\/strong\u003e Dual side adjustable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeals:\u003c\/strong\u003e NOK MX seals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushings:\u003c\/strong\u003e Daido MX bushings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFork Guards:\u003c\/strong\u003e High impact PP wraparound guards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpring Rate Options\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedium:\u003c\/strong\u003e 140 to 180 lb rider weight, 3.6 \/ 3.6 springs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy:\u003c\/strong\u003e 180 to 220 lb rider weight, 4.0 \/ 3.6 springs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRider weight ranges are calculated without riding gear. Approximately 15 pounds of riding gear is factored into the recommended range. Any upgrades such as heavier batteries or controllers should be added to rider weight when selecting spring rates.\u003c\/p\u003e\n\u003ch3\u003eCMX Tune Setup Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFactory settings are measured in clicks from the fully closed position\u003c\/li\u003e\n\u003cli\u003eBack adjusters out from closed position to reach factory settings\u003c\/li\u003e\n\u003cli\u003eRiders near a weight cutoff may adjust preload to fine tune sag\u003c\/li\u003e\n\u003cli\u003eAggressive riders may benefit from moving up one spring class\u003c\/li\u003e\n\u003cli\u003eRiding style and terrain may require further tuning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eE-Ride Pro SS 3.0\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho This Fork Is Perfect For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eE-Ride Pro riders building a \u003cstrong\u003erace ready or track focused setup\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTrail riders who want \u003cstrong\u003emaximum front end stability and durability\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh power builds that need \u003cstrong\u003etrue motocross level suspension performance\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"product-block product-block--tab\"\u003e\n\u003cdiv class=\"collapsibles-wrapper collapsibles-wrapper--border-bottom\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sirris Store","offers":[{"title":"Medium (140-180 lb) \/ CMX - Standard Clamp \/ Black","offer_id":51503119499554,"sku":"430-99-024-MED-02,  43MM USD, 775MM X 220MM, 25MM OFFSET, E-RIDE PRO SS 3.0, MED, BLACK","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"Medium (140-180 lb) \/ CMX - Standard Clamp \/ Blue","offer_id":51503119532322,"sku":"430-99-024-MED-04,  43MM USD, 775MM X 220MM, 25MM OFFSET, E-RIDE PRO SS 3.0, MED, BLUE","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"Medium (140-180 lb) \/ CMX - Drop Clamp \/ Black","offer_id":51503119565090,"sku":"430-99-024-MED-02-DR,  43MM USD, 775MM X 220MM, 25MM OFFSET, E-RIDE PRO SS 3.0, MED, BLACK, DROP CLAMP","price":2350.0,"currency_code":"USD","in_stock":true},{"title":"Heavy (180-220 lb) \/ CMX - Standard Clamp \/ Black","offer_id":51503119597858,"sku":"430-99-024-HVY-02, 43MM USD, 775MM X 220MM, 25MM OFFSET, E-RIDE PRO SS 3.0, HVY, BLACK","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"Heavy (180-220 lb) \/ CMX - Standard Clamp \/ Blue","offer_id":51503119630626,"sku":"430-99-024-HVY-04, 43MM USD, 775MM X 220MM, 25MM OFFSET, E-RIDE PRO SS 3.0, HVY, BLUE","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"Heavy (180-220 lb) \/ CMX - Drop Clamp \/ Black","offer_id":51503119663394,"sku":"430-99-024-HVY-02-DR, 43MM USD, 775MM X 220MM, 25MM OFFSET, E-RIDE PRO SS 3.0, HEAVY, BLACK, DROP CLAMP","price":2350.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0093\/1672\/8892\/files\/sirris-F43-220-E-RIde-Pro-SS-30-suspension-fork-3_4-CMX-black.jpg?v=1775673780","url":"https:\/\/revrides.com\/products\/f43-cmx-tune-tool-free-lsc-220-mm-travel-e-ride-pro-ss-3-0","provider":"REVRides","version":"1.0","type":"link"}