N15 Design Shoulder Harness Slack Retainers / Collars


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Say goodbye to zip ties and heavy aluminum harness collars!


The N15 Design shoulder harness slack retainers / collars are a nice final touch to any track or race car build. Traditionally accomplished with an aluminum collar, these are 3D printed from a high quality carbon fiber filled polycarbonate filament. Strong and lightweight, these will keep your shoulder straps from migrating across the harness bar as well as clean up the installation by rolling up the extra slack. These come in at 41g per piece — a single 6061 aluminum collar is typically 150g+.


Available in 1.5″ and 1.75″ sizes. Suitable for 2″ and 3″ shoulder straps.


All installation hardware is included.


Purchase is for one side of the car — please purchase a quantity of 2 for both driver and passenger.

Additional information

Weight N/A
Dimensions N/A
Harness Bar Diameter

1.5", 1.75"