RCM-SP-1031 1031 - 1-Piece Front Upper Bulkhead and Hard sprints are available

and Hard sprints are available as tuning options

1015 - Split Front Upper Bulkheads (L & R)

To easier steer the airflow along the sides over the rear wheel arches to the rear wing

Thanks to the feedback from racers

The I-BARRS V3 shares the same insert (#PCY2101) as other PROCIRCUIT tires

RCM-SP-1031 1031 - 1-Piece Front Upper Bulkhead and Hard sprints are availableReplacement 1pc Front Upper bulkheads for RC MAKER SP1 and SP1 F Offers the least flex between front upper bulkheads. This is suggested for medium to high traction conditions, and can be used in combination with the soft (1026), medium (1027) or hard (1028) bulkhead flex brace. Manufactured from 2. 2mm Carbon Fiber RCM SP 1031 Includes: 1x 1 Piece Front Upper Bulkhead