From Exotek Racing:
Diff reinforcement sleeves for the 22 4.0 SR composite diff outdrives.
Machined heavy duty stainless steel sleeves clicks directly into place on the SR outdrives and provides needed reinforcement of the plastic outdrives. Our sleeves prevents the plastic diffs from spreading open which can result in chewed up outdrives and premature wear and diff rebuilds.
Opened slots for easy visibility to inspect the condition of your plastic outdrives.
Only 1.7gr each.