ALUMINUM CENTER DIFF SET, w/40CrMo main diff gear 50T SPIRAL for Arrma 1/7 hopups upgrade parts

Features:
Hard-anodized colour，CNC machined PTFE-coated hardened alloy 6061-T6
The lightweight aluminum alloy material is durable and improves the overall performance of the METAL DIFF CASE
Aside from the great looks, aluminum alloy will not flex as much as plastic under stress or during high ambient temperatures. 
40CrMo steel is top level steel better than 20CrMo and #45 steel

Specification:
Compatible with: 
brand name:  ARRMA, 
item number:

ARA7617V2
1/7 FELONY 6S BLX STREET BASH ALL-ROAD MUSCLE CAR RTR
ARA7615V2
1/7 INFRACTION 6S BLX V2 ALL-ROAD TRUCK RTR

Note:Check your specific model's manual for compatibility,or Contact us.