Yokomo R12-18SRT Rear Shock Shaft/Piston Titanium Coated for R12/GT  [R12-18SRT]

Tuning stability with a titanium-coated shaft for R12/GT

This replacement rear shock shaft and piston fits the Yokomo R12/GT series as a performance-minded accessory for RC touring cars. The shaft surface is titanium coated to minimise surface damage and reduce abrasion against the damper O-ring, which supports steadier damping behavior across multiple runs.

Fitment notes: the R12-18SRT shaft replaces the factory rear damper piston shaft; insert it through the damper body and seal assembly matching the original orientation. Confirm the O-ring is seated correctly and that the piston moves freely before final reassembly. Use the recommended shock oil and standard disassembly steps for your R12/GT chassis.

Effect on setup: because the coating only alters surface hardness and does not modify piston geometry or hole sizes, expected damping values stay the same while the shaft helps maintain those settings longer by limiting wear at the seal interface.