Ultimate Racing Rear Offset Optional Kit for Mugen MBX8R

Take your Mugen MBX8R's performance to the next level with the new Ultimate Racing Rear Offset Kit! Specifically designed to optimise rear-end geometry, this pack introduces a trend successfully adopted by the leading official brands on the market today.

With this kit you'll achieve greater overall rear-end grip thanks to the increased offset, translating into an immediate boost in your car's mechanical grip.

Why you need it in your pit bag

• Predictable handling: The stock MBX8R tends to squat abruptly at the rear when track conditions change or the tyre choice isn't ideal. This kit makes the rear end work flatter and twist less under acceleration.
• Race-day safety net: Minimises time losses in those heats where the track becomes slippery or you don't nail the perfect tyre. The car will be far more forgiving and maintain noble behaviour.

Kit Contents

• 1 x Ultimate C Plate +2mm
• 1 x Ultimate D Plate +2mm
• 1 x Ultimate Hex Set +5mm
• 1 x Ultimate Hex Set +4mm
• 2 x 89mm MUGEN Driveshafts
• 1 x MBX8 MUGEN Suspension Arms

⚠️ Assembly note: To install this kit, you only need to slightly shave the included rear suspension arm (in the contact area) to prevent any rubbing against the differential outdrive. See photo 6.

Recommended Setup Guide

To get the most out of this new geometry, we suggest the following adjustments relative to the stock configuration:

• Rear anti-roll bar: If you're running the stock 2.7 bar, we recommend switching to a 2.6 bar as a baseline. If circuit grip is extremely low, don't hesitate to go even thinner.
• Rear upper turnbuckle: Shorten it by 3 mm relative to your usual measurement (for example, if the distance between plastics was 19 mm, set it now to 16 mm).
• Rear hub position: The stock car typically uses the upper hole of the hub. When fitting this kit on medium- to high-grip circuits, we strongly recommend using the lower hole. This will flatten the rear end even further while giving you extra rotation in corners.