New XB4 Composite Long Suspension Arms – Hard


Composite Long Suspension Arm Front Lower – Hard


• 2mm longer
• Developed for low traction conditions
• Lower shock mount for lower CG
• Improves stability
• Generates more traction
• Lightweight
• Specially-formulated hard composite material


Front lower long suspension arm made from super-tough high-tech composite material suitable for most track conditions. Longer suspension arm have redesigned geometry for improved handling, increased traction and improved handling on bumpy tracks.
Repositioned lower shock mount locations lower the shocks and shock tower to decrease the CG.
The design of the arm allows for a greater range of adjustments. The opening for the C-hub is larger for greater wheelbase adjustments possibilities compared to previous versions.
The shock mounting location is wider to allow use of the eccentric shock pivot ball to move the shock absorber between two different positions creating different shock angles that affect traction and corner speed.
The arm also features a mounting position for the optional front anti-roll bar.


Fits only XB4¢¥20
#362113-H Composite Long Suspension Arm Front Lower – Hard

Composite Long Suspension Arm Rear Lower Right – Hard


• 2mm longer
• Developed for low traction conditions
• Lower shock mount for lower CG
• Improves stability
• Generates more traction
• Lightweight
• Specially-formulated hard composite material

Completely redesigned rear long suspension arm is 2mm longer, which helps to generate more grip in low traction conditions and improves stability on higher traction surfaces and improves handling on bumpy tracks.
Made from super-tough, high-tech composite material gives a perfect balance between reliability and performance. The suspension arm is rigid enough for a responsive feel and extreme durability.
This HARD arm is suitable for most track conditions, especially medium- and high-traction tracks.
Intelligent arm design allows for variable positioning of the rear shocks. Depending on track conditions, the rear shocks can be installed either in front of or behind the rear shock tower, and the rear shock tower can be placed either in front of or behind the bulkhead.
For use with matching #363123-H hard lower left arm.
Fits only XB4¢¥20
#363113-H Composite Long Suspension Arm Rear Lower Right – Hard

Composite Long Suspension Arm Rear Lower Left – Hard


• 2mm longer
• Developed for low traction conditions
• Lower shock mount for lower CG
• Improves stability
• Generates more traction
• Lightweight
• Specially-formulated hard composite material


Completely redesigned rear long suspension arm is 2mm longer, which helps to generate more grip in low traction conditions and improves stability on higher traction surfaces and improves handling on bumpy tracks.
Made from super-tough, high-tech composite material gives a perfect balance between reliability and performance. The suspension arm is rigid enough for a responsive feel and extreme durability.
This HARD arm is suitable for most track conditions, especially medium- and high-traction tracks.
Intelligent arm design allows for variable positioning of the rear shocks. Depending on track conditions, the rear shocks can be installed either in front of or behind the rear shock tower, and the rear shock tower can be placed either in front of or behind the bulkhead.


For use with matching #363113-H hard lower right arm.
Fits only XB4¢¥20
#363123-H Composite Long Suspension Arm Rear Lower Left – Hard