This is a soft type spring set compared to OP440.
Tamiya HOP-UP Options OP.944 3x50 Hard T Buckle Shaft (2)
Tamiya hop up Options No.1547 OP.1547 TA06 short damper for carbon damper stay
Tamiya Hop-Up Options No. 581 OP.581 Racing Motor Brush Standard Type 53581
Tamiya Hop-Up Options No.631 OP.631 Short Spring for TRF Damper (Medium 2) 53631
Tamiya Hop-Up Options No.929 OP.929 Dirt Tune Motor (27T) 53929
Tamiya Hop-Up Options No.284 OP.284 Aluminum 0.2 inch (5 mm) Pillow Ball 53284
