Greater Freedom in Ackermann Adjustment
The MERIKEN KNUCKLES 4 is a drift-specific knuckle offering extensive front-end adjustability. covering everything from upright and tie-rod positions to trail. kingpin angle. and roll center.

By fine-tuning settings to match your driving style. chassis. tires. and track conditions. you can optimize front tire contact feel. steering response. and cornering stability.

Beyond performance. the design also allows for a highly customized look through the ability to mount calipers and rotors.


Stepless Ackermann Adjustment
Upright adjustment is possible using the included spacers:
��Gold: 1.0mm
��Red: 0.5mm
The tie-rod mounting component is independent of the main knuckle body and slides freely.
Simply insert the spacers and tighten the screws to lock it in place.
The sliding section features interlocking grooves. ensuring secure fixation and excellent rigidity.


Two Types of Tie-Rod Mounting Arms
Choose from two mounting options to suit your chassis type and wiper height.
The tie-rod can be mounted from either the top or the bottom.


Kingpin Angle & Trail Adjustment
Utilizing a reverse trail design—bringing the tire axis closer to the steering rotation axis—minimizes tire displacement during steering and ensures the front tires react quickly to steering inputs.

Kingpin angle options: 3 degrees or 8 degrees.

Improved initial steering response
Easier to sense front tire contact
Quick movement during rapid direction changes
Clearer front-end feedback. even on vehicles with heavy rear weight bias
Geometry that provides direct tire response to inputs. making it easier to actively utilize the front tires.


ONI-BEA_850
Comes standard with high-end ceramic ball bearings from HRC. engineered for superior rotation. rotational force. and low friction.
Experience a whole new level of rotational performance.


Wide Tread Spacer Mechanism + Caliper Mounting Holes
Using the included dedicated spacers. you can adjust the tire position (track width) by moving it inward or outward without needing to replace the wheel hub. Equipped with caliper mounting holes. the design allows you to enjoy the visual appeal when combined with a brake rotor.


*Note: The axle (brake rotor) is sold separately; please use commercially available parts or those designed for the RDX.
*Note: Shims for Ackerman adjustment are included (2 gold. 4 red).