renthal renthal twinwall 997 lila 997 01 pe 02 261Twinwall Construction Consists of Two Aluminum Alloy Tubes, One Within The Other, Outer Tube is 7010 T73, Which Extreme Resistance to Mechanical Damage and is anodized to Prevent Corrosion, Inner Tube is ultra High Strengt6 Twist Grip and Controls, Rubber Seals Are Used To Cover The Ends Of The Outer Tube To Keep Water and Cleaning Fluids Out, Laser Marked In The Middle For Accurate Positioning, Each Handlebar Includes An Updated Inject Molded Foam