Alpinestars Youth Neck Support Black Yellow Fluo One Size Visors the system effectively mitigates energy Size:[Zip Up] M the system effectively mitigates energy transfer to the head and brain of the rider during any given accident or impact event RFX Pro Elite Rear Sprocket Beta RR 250 300 350 450 Enduro 13 20 (Red) Various Sizes • The YNS frame is constructed from an injected polymer compound that has been extensively impact tested on a range of off road surfaces and varying temperatures • The rear stabilizer system helps to keep the support in position and is also designed to channel extreme energy loads away from the spine by transmitting it across the shoulder and helping to avoid serious spinal injury