Mugen MRX5 Gearbox 2nd Gear Housing 7075-T6 - Arrowmax AM-MRX5-H0289  [AM-MRX5-H0289]

Arrowmax AM-MRX5-H0289 Housing For 2nd. Gear (7075-T6)
Price:
AUD$15.43
Brand:
Arrowmax
Model:
AM-MRX5-H0289
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Aluminium 2nd Gear Housing for MRX5

This machined 7075-T6 aluminium housing is a direct replacement for the standard second gear housing on the Mugen MRX5. The Arrowmax AM-MRX5-H0289 increases stiffness at the second gear location to provide a firmer support for drivetrain components.

Fitment is simple for anyone familiar with MRX5 service: remove the stock housing, move across any bearings or spacers, and bolt the new housing in place using the MRX5 mounting points and original fasteners. After fitting, inspect and adjust gear mesh and shaft alignment to ensure smooth drivetrain operation.

As a chassis-level hop-up, this housing reduces local compliance around the gearbox and can help when making fine adjustments to gear engagement, bearing clearance and overall drivetrain setup.

Will this require different mounting screws?

Generally no, the design uses the MRX5 standard mounting points and your original screws. Keep a spare set of screws handy in case any fasteners are worn.

Does the aluminium housing change setup procedure?

Setup steps remain the same but you should recheck gear mesh and bearing seating after installation since the stiffer housing reduces tolerance for misalignment.

Is this suitable for competition use?

Yes, its increased rigidity is aimed at drivers who need consistent drivetrain behaviour during races and practice sessions, provided it is installed and monitored correctly.

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