Xray T2 Alu Quick Roll-Center holder
New for the Xray T2 chassis from Xray are these 4.9mm alu quick roll-center holders which allow you to make the upper linkage longer in either the front or rear suspension of all T2-based cars. Using the 4.9mm roll-center holders in the front makes the car turn easier and more precisely, while using them in the rear increases steering and cornering speed. Supplied as a pair marked L1 and L2.
Source: Xray [teamxray.com]