<p>Coil SumoSprings are made from the same material as other SumoSprings products – a micro-cellular polyurethane that decreases vibration, stabilizes sway, and tightens up your existing factory coils. This upgrade adds up to 30% additional capacity to your coils, creating a cushion effect and stopping unwanted dip and roll.</p>
Seller return policy
If you return a product that qualified for free shipping, the outbound shipping costs will be deducted from your return refund. You may return the item within 90 days from the date your order was received for a refund. We cannot exchange items. Please place a new order online for the replacement item(s). No claims for shortages or damages will be honored unless reported within 10 business days from the date of delivery.
