Merits N421/N521 Manual Wheelchair Parts

This page covers replacement parts for the Merits N421/N521 manual wheelchair, also known as the Acadia. Parts include 24" solid urethane rear tires, 8"x1" front caster wheels and assemblies, grips, a wheelchair cover, under-seat and seatback bags, and an oxygen tank holder.

The two models share the same frame, so most parts interchange; the N421 has swing-away footrests and the N521 has elevating legrests. Wheels are 24" in the rear (24"x1-3/8" tires) with 8" front casters. The 8"x1" caster assembly also fits the Merits N211, N246, N424 and N700. The model number is on the frame, often on the crossbrace. As an authorized Merits dealer, we supply genuine OEM Merits parts, with compatible alternatives on select items. Can't find your part? Contact us with your model number and a photo of the old part, and our team will help track it down.