From Mugen:
New shock springs for MRX6X. The new shock springs improves the steering characteristics on the low grip track.
#H2517
Rear Lower Shock Mount CFRP 3mm
Improves the rear traction and crash resistance than H2159 kit standard (2.5mm).
#H2159-B
Rear Lower Shock Mount A7075 3mm
Improves the rear traction than H2159-B by different material. This will be suitable for the low grip track.
#H2168
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