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HPI optional Pro 4 main chassis 3.0mm. This is the main part of the car..
HPI two front or rear MIP CVD purple aluminum RS4 Pro 4 touring car kit.
HPI optional Pro 4 upper deck 2.5mm constructed of woven graphite.
HPI optional graphite camber plate for the Pro 4.
HPI Pro 4 chassis balance weight set.t
HPI Delrin outdrive set for the RS4 Pro 4.
HPI graphite bumper brace for the RS4 Pro 4.
HPI RS4 Pro 4 carbon graphite gearbox set.
HPI Turnbuckle Set for the Nitro RS4 Narrow/Wide kits.
HPI aluminum pivot block for front or rear on the RS4 Pro 4.
HPI aluminum 10mm servo mount for the RS4 Pro 4 kit.
HPI four cup joint 6mm for the RS4 Pro 4
HPI ball set for sway bar RS4 Pro 4
HPI Two Bearing 3x6x2.5mm Flanged RS4 Pro 4. For general use.
HPI exhaust manifold for the Nitro RS4 3. This works with side exhaust engines.
HPI Two Ball Bearing 5x8x2.5mm. Ball bearing is used for the ball differential.
HPI Stock Replacement Upper Arm Set for the Nitro RS4 Racer 2.
HPI Replacement Body Mount Set for the Super Nitro Rally.
HPI Replacement Shock Parts and Upper Arm Set for the Super Nitro Rally.