{"product_id":"r38-2sc-e-ride-pro-3-0","title":"Sirris R38 Rear Shock | E-Ride Pro 3.0","description":"\u003ch1\u003eSirris R38 Rear Shock | E-Ride Pro 3.0\u003c\/h1\u003e\n\u003ch2\u003eBig Moto Performance, Bombproof Durability\u003c\/h2\u003e\n\u003cp\u003eThe Sirris R38 brings true big-bike suspension technology to the E-Ride Pro 3.0. It uses proven internal architecture from the larger Sirris R46 platform, packaged into an oversized piggyback shock engineered for compact electric motos. When the trail gets rough, speeds climb, and repeated hits begin building heat, the R38 is designed to keep delivering controlled and consistent damping.\u003c\/p\u003e\n\u003cp\u003eSirris built the R38 for riders who need more support, traction, and adjustability than a typical small-platform shock can provide. Its high-flow internals move a massive amount of oil, helping the shock respond quickly without giving up control during hard riding. The result is a planted rear end with the moto-level feel and consistency normally associated with full-size motocross suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The stock E-Ride Pro linkage will not work with the Sirris R38 shock. Sirris partnered with Prickly Motorsports to develop an R38-specific linkage, which is sold separately. The custom linkage provides the correct fitment and geometry for the 289 x 78 mm shock while raising the rear of the bike by 25 mm.\u003c\/p\u003e\n\u003cp\u003eA CMX fork drop clamp can also be added to raise the front by an equivalent 25 mm. This helps riders create a balanced chassis setup when using the taller R38 rear suspension configuration.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/revrides.com\/products\/prickly-linkage-for-sirris-r38-e-ride-pro-sr-3-0\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cem\u003e\u003cstrong\u003eLink to linkage rocker you need here!\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eHigh-Flow CMX Damping\u003c\/h2\u003e\n\u003cp\u003eThe R38 shares its high-flow base valve cavity architecture with the larger R46. This design provides exceptional pressure balance, faster frequency response, and the oil flow needed for a controlled moto-style feel. Pro-level CMX, or Compact Motocross Tune, damping includes fully tunable compression and rebound circuits that remain cool and consistent under repeated hard hits.\u003c\/p\u003e\n\u003cp\u003eTwo Stage Compression, also called 2SC, provides independent high-speed and low-speed compression adjustment. Low-speed compression helps tune chassis movement during braking, acceleration, rolling terrain, and rider weight transfer. High-speed compression controls sharper impacts such as square edges, hard landings, rocks, and roots. The separate rebound adjustment lets riders control how quickly the shock recovers after compression.\u003c\/p\u003e\n\u003cp\u003eEach R38 is tuned specifically for its bike model and designed to pair with Sirris F43 CMX forks. Together, the shock and fork create a more balanced suspension package with improved traction, control, and confidence at speed.\u003c\/p\u003e\n\u003ch2\u003eRider Weight and Spring Options\u003c\/h2\u003e\n\u003cp\u003eSirris offers two spring ranges for the E-Ride Pro 3.0. The listed ranges are based on rider weight without riding gear. Sirris calculates an additional 15 pounds of riding gear into each recommended range.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e140 to 180 lb rider:\u003c\/strong\u003e Medium, 80 N\/mm spring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e180 to 220 lb rider:\u003c\/strong\u003e Heavy, 90 N\/mm spring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArchitecture:\u003c\/strong\u003e Piggyback shock with steel spring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 289 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStroke:\u003c\/strong\u003e 78 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 3.3 lb \/ 1.5 kg without spring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompression system:\u003c\/strong\u003e 2SC Two Stage Compression with independent high-speed and low-speed adjustment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-speed compression:\u003c\/strong\u003e Tool-free adjustment, 18 clicks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-speed compression:\u003c\/strong\u003e 24 clicks, adjusted with a 20 mm hex\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRebound:\u003c\/strong\u003e Tool-free adjustment, 24 clicks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring adjustment:\u003c\/strong\u003e Adjustable preload\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamping tune:\u003c\/strong\u003e Pro-level CMX Compact Motocross Tune\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottom-out system:\u003c\/strong\u003e MCU bumper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop-out system:\u003c\/strong\u003e Rubber bumper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeals:\u003c\/strong\u003e HNBR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReservoir\u003c\/h3\u003e\n\u003cp\u003eThe reservoir is designed around the large 16 mm shaft and its high oil-displacement requirements. An R46-spec internal floating piston system manages shaft displacement with precision, helping maintain a consistent damping feel during repeated hard impacts and high-heat riding.\u003c\/p\u003e\n\u003ch3\u003eShaft\u003c\/h3\u003e\n\u003cp\u003eThe R38 uses the same shaft as the larger R46. Its massive 16 mm induction heat-treated hollow shaft combines structural strength with increased oil flow through the main piston for true moto-level damping performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside diameter:\u003c\/strong\u003e 16 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside diameter:\u003c\/strong\u003e 5.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Hollow, induction-hardened steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Hard chrome plated\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShock Body\u003c\/h3\u003e\n\u003cp\u003eA smaller-diameter body, spring, retainer, and hardware package reduces the shock’s external size while preserving the oversized internal flow characteristics responsible for its ride quality.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Seamless 6061 aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Type 3 hard anodized coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e ACME\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMain Piston\u003c\/h3\u003e\n\u003cp\u003eThe 38 mm high-flow main piston uses true powersports architecture. It is slightly smaller than the R46 piston but follows the same high-flow design philosophy, providing a broad tuning range and consistent damping performance beyond typical shocks in this category.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 38 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e CNC-machined 6061 billet aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Type 3 hard anodized coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston band:\u003c\/strong\u003e Hard band\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpring Retainer\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Seamless 6061 aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Type 3 hard anodized coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e ACME\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustment:\u003c\/strong\u003e Manual preload adjustment with locking feature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBody Cap and Lower Eyelet\u003c\/h3\u003e\n\u003cp\u003eThe upper body cap is engineered for tighter chassis fitment without sacrificing internal oil-flow performance. The new lower eyelet fits smaller bike platforms while maintaining maximum rebound oil flow to the shaft and metering rod.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody-cap bearing:\u003c\/strong\u003e Ultra-durable chrome-plated, Teflon-lined spherical bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLower-eyelet bearing:\u003c\/strong\u003e Ultra-durable chrome-plated, Teflon-lined spherical bearing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eE-Ride Pro 3.0\u003c\/li\u003e\n\u003cli\u003eRequires the Prickly Motorsports R38-specific linkage, sold separately\u003c\/li\u003e\n\u003cli style=\"font-weight: bold; font-style: italic; color: rgb(255, 42, 0);\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cem\u003e\u003cstrong\u003eNot compatible with the stock E-Ride Pro lower linkage\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eDesigned to pair with Sirris F43 CMX forks\u003c\/li\u003e\n\u003cli\u003eOptional CMX fork drop clamp raises the front by 25 mm to match the rear height increase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBest Fit for These Riders\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAggressive trail riders who need better heat management and damping consistency through repeated impacts\u003c\/li\u003e\n\u003cli\u003eMotocross-style riders looking for independent compression control, adjustable rebound, and stronger bottom-out support\u003c\/li\u003e\n\u003cli\u003eE-Ride Pro 3.0 owners building a balanced Sirris F43 CMX fork and R38 shock suspension package\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sirris Store","offers":[{"title":"Medium (140-180 lb) \/ CMX \/ 2SC","offer_id":52187775861026,"sku":"238-99-004-MED-30, R38, E-RIDE PRO 3.0, MEDIUM","price":899.0,"currency_code":"USD","in_stock":true},{"title":"Heavy (180-220 lb) \/ CMX \/ 2SC","offer_id":52187775893794,"sku":"238-99-004-HVY-3.0, R38, E-RIDE PRO 3.0, HEAVY","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0093\/1672\/8892\/files\/sirris-R38-shock-front-eridepro-sr_f3a6ce17-fc2e-4055-8b04-f352f9f618b7.jpg?v=1784824917","url":"https:\/\/revrides.com\/products\/r38-2sc-e-ride-pro-3-0","provider":"REVRides","version":"1.0","type":"link"}