As the TLR Race Team continues to push the envelope of performance for the 22-4, they have found the weight distribution and overall balance of the 22-4 to be much better when running a “shorty” LiPo on the left side of the chassis and mounting the ESC on the right. This moves the weight a little more forward overall, improves the corner weight balance, and reduces the total weight by 75-100g (depending on the battery pack used). This new configuration is used on most all TLR 22-4 setups since mid-2014 including Ryan Maifield’s 2015 Reedy Race Champion setup. Designed as a direct replacement, no other parts are needed to convert to your 22-4!