Spring for YSS rear shock in eBike parts
Spring for YSS shock

YSS Spring

Regular price$250.00
Shipping calculated at checkout.

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Upgrade your Surron with the YSS Spring from EBMX, designed to enhance your shock performance. This high-quality spring offers strength and adjustability, ensuring a customized ride experience. Includes EBMX linkage and triangle for added versatility.

EBMX worked with YSS to adapt a high quality motorcycle shock to the Surron. This thing is beefy, incredibly strong, with tons of adjustment to dial in the exact ride you want from this shock.

For the ultimate combo combine this shock with the EBMX Extended Swingarm for a longer wheelbase and increased rear wheel travel.


  • Length 10.9"/277mm (OEM 10.5/267mm)
  • Stroke 2.64"/67mm (OEM 3.5")
  • The linkage (included) retains the stock 200mm of suspension travel
  • 220mm travel when combined with EBMX Extended Swingarm
  • Plug and play (supplied with bushing kit) with the stock swing arm and linkage (also work very well with the upgraded EBMX Swing arm – size up one spring weight if using the EBMX swing arm as there is more leverage with the longer arms.
  • High speed and low speed compression damping that actually work (unlike the stock shocks…)
  • Rebound adjustment clicker
  • Multiple spring weight options (see below for your weight)
  • Designed for a motorbike, not a mountain bike
  • Huge oil reservoir keeps the shock cool even under hard riding
Weight Swingarm Spring
145-165 lbs Stock 70nm
165-190 lbs Stock 80nm
190-210 lbs Stock 90nm
210+ lbs Stock 100nm
145-165 lbs EBMX Extended 90nm
165-190 lbs EBMX Extended 100nm
190+ lbs EBMX Extended 115nm

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