MRT Engineering Roll-Centre/Bump Steer/Quick Steer Kit (E30 3 Series, E36 3 Series/Z3, E46 3 Series, E8X Z4 inc M Models)
Price range: £391.52 through £448.91
When lowering your car (BMW E30 / E36 / E46 / Z3 / Z4), the front end geometry goes wrong. The main purpose of the kit is to correct these geometry issues.
The steering adapter changes the control arm pivot point vertical distance by 30mm, correcting the roll-centre and camber curve.
The tie rod end pivot point is also changed by 30mm in vertical direction which corrects the bump steer curve and the pivot point is additionally moved closer to the control arm pivot point changing the lever ratio, which gives you quick steering ratio and allows more steering angle.
The kit can be combined with most of the E30 / E36 / E46 control arms, knuckles/spindles and tie rods. Please look further down this listing for minimum internal wheel diameter required to run these kits.
Kit includes full instructions and all hardware
- Description
Description
MRT Engineering Roll-centre/Bump Steer/Quick Steer Kit for E30 3 Series, E36 3 Series/Z3, E46 3 Series, E8X Z4 inc M Models.
Roll-center / bump steer / angle-kit for BMW E30 / E36 / E36 M3 / Z3 / Z3M / E46 / E46 M3 / Z4 / Z4M models (excluding E30 M3 / E30 iX / E46 xi/xd models)
Latest Gen 3.5 kit main features:
- 30mm roll-centre correction
- 30mm bump steer correction
- 30% quicker steering ratio (around 1 less turn on the steering wheel)
- All new one-piece fasteners and billet castle nuts with PVD coating
- More steering angle
- Original Ackerman angle for multi-purpose use (proven to work in Street, Circuit, Rally, AutoX and drifting applications)
- Compatible with original tie rods (cutting of the threads might be required for spindle/knuckle clearance * and sufficient toe-in adjustment)
- Please refer to wheel fitment chart to check compatibility with your wheel/knuckle combination
- Control arm bore needs to be tapped for bearing retainer insert on E30 M3 “Dorman” and E46 M3 control arms, thread tool included **
- Steering rack stops recommended
- Control arms and/or tie rods shown in the pictures not included
- Comes with mounting hardware and of course MRT Engineering decals
Fitment:
Outer joint size:
- 32mm (E30 M3 “Dorman”) thread tool included **
- 41mm (E30 non-M, E36 M3, Z3M)
- 48.5mm (E36 / Z3 non-M, E46 / Z4 non-M aftermarket, E46 M-Sport / Z4M)
- 33mm (E46 M3) thread tool included **
Spindle/knuckle:
- E30 non-M *
- E36 / Z3 non-M
- E36 M3 3.0 *
- E36 M3 3.2 / Z3M *
- E46 / Z4 non-M / Z4M
- E46 M3
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