Here are all the options parts for the Xray T4 2018 and olders
Reference 06308276
Brand: XRAY
XRAY 4S SPRING-SET C=2.7 (2) - 308276
Reference 06301323
Brand: XRAY
FRONT BODY MOUNT SET +1MM HEIGHT - 301323
Reference 06308264
Brand: XRAY
XRAY 4S SPRING-SET PROGRESSIVE C=2.5-2.8 (2) - 308264
Reference 06305870-O
Brand: XRAY
OFFSET SPUR GEAR 100T / 64 - ORANGE - 305870-O
Reference 06303128
Brand: XRAY
ALU SHIM 3x6x6.0MM (10) - 303128
Reference 06302374
Brand: XRAY
COMPOSITE C-HUB LEFT - 4° DEG. - HARD (ECS) - 302374
Reference 06303125-K
Brand: XRAY
ALU SHIM 3x6x3.0MM - BLACK (10) - 303125-K
Reference 06303167
Brand: XRAY
REAR SUSPENSION ARM - GRAPHITE - 1-HOLE - 303167
Reference 06307217
Brand: XRAY
TITAN SUSPENSION PIVOT PIN (2) - 307217
Reference 06303128-K
Brand: XRAY
ALU SHIM 3x6x6.0MM - BLACK (10) - 303128-K
Reference 06305866
Brand: XRAY
OFFSET SPUR GEAR 96T / 64 - 305866
Reference 06305880
Brand: XRAY
OFFSET SPUR GEAR 110T / 64 - 305880