Motion Composites · rigid carbon
Apex C
The Apex C is the carbon-fiber version of the Apex — a 9.7 lb high-modulus T700 carbon cantilever that keeps full adjustability while shedding weight and damping vibration. It sits among the lightest production rigid frames available, so every push and every lift costs you less. Configure it below with live weight, estimated overall width, and price.
Body-Fit Dimensions
These measurements set how the chair fits your body. Most are fixed at build time — take a minute to get them right.
The internal frame width — the single dimension that drives overall width.
How to measure / choose
Sit on a firm, flat surface and measure across the widest point of your hips or thighs. Add ½–1" of clearance. Too wide forces an inefficient, shoulder-stressing push arc; too narrow causes pressure at the outer hips. This is fixed at time of build — get it right.
How far the seat extends under your thighs.
How to measure / choose
Sit with your back against a wall and measure from the wall to the crease behind your knee, then subtract 1–2" of clearance. Too deep cuts off circulation behind the knee; too shallow tilts the pelvis forward and puts too much pressure on your sitting bones.
Fine-tunes how far the frame reaches past the end of your seat upholstery before it bends down to the footrest, independent of Seat Depth. No charge either direction.
How to measure / choose
Seat Depth above is the length of the seat upholstery itself — this is different. Frame Length is how far the bare frame extends past the end of that upholstery before it angles down to the footrest. Longer opens up more room between the edge of your cushion and the footrest bend — helpful for longer lower legs, limited knee bend, or edema. Shorter tucks the footrest in closer for a tighter turning circle and a more compact footprint. Standard fits most riders — only move off it if you specifically need the extra or reduced room.
Front seat height — sets whether your feet rest flat with thighs parallel to the seat.
How to measure / choose
With your shoes on, measure from the floor to the back of your knee while seated, then account for cushion thickness. Too high lifts your thighs off the seat and increases pressure on your sitting bones; too low lets your feet drag. Adjustable in fine increments, so small corrections are easy to make.
Rear seat height — combined with front height it sets the seat slope ("dump").
How to measure / choose
Usually set 1–3" lower than the front height to create rearward seat slope ("dump"), which improves pelvic stability and propulsion. Constrained by rear wheel size and axle position — if your chosen combination isn’t achievable, I’ll flag it before your chair is built.
Sets which footrest hardware range fits — defaults to 2" less than your front height, editable.
How to measure / choose
Measured from the seat surface down to the footplate. As a rule of thumb this defaults to 2" less than your front seat-to-floor height, but you can change it — get up in your existing chair or a fitted one and measure directly if you have one. This measurement, together with the footrest angle you pick under Footrests & Front Frame, determines the specific hardware built for you. The 90° (most tucked) angle has a notably narrower achievable range than the swing-away angles — about 8"–14" versus 14"–20" — since the foot sits higher and more upright under the seat.
Documentos oficiales de Motion Composites — el mismo folleto, guía de accesorios, manual del propietario y términos de garantía con los que trabajamos. El marco y el cross-brace están cubiertos por una garantía limitada de por vida contra defectos de fabricación (las piezas de carbono están cubiertas de por vida); los componentes están cubiertos por 1 año.
- Daryl revisa tu configuración exacta. Antes de fabricar nada, una revisión clínica confirma que la configuración tiene sentido para tu cuerpo y tus objetivos — y te contactamos directamente con cualquier inquietud o ajuste sugerido.
- Se fabrica según tus medidas. Debido a que cada Apex C se fabrica a medida por pedido, no admite devoluciones. Sin embargo, la mayoría de los parámetros siguen siendo ajustables después de la entrega, y la silla se puede mejorar con el tiempo (ruedas, casters, respaldo y más).
- Incluye una llamada de seguimiento. Después de que llega tu silla, tienes una sesión por video o audio para ajustar la posición del eje, la inclinación del asiento y el ajuste general — para que la silla funcione bien desde el primer día.
- El peso y el ancho mostrados aquí son estimados. El peso del marco (9.7 lb) y los precios de las opciones son exactos; los pesos de los componentes y el ancho total son estimados claramente indicados. Confirmamos el ancho total final con la calculadora oficial de Motion Composites antes de colocar tu pedido.
¿No sabes por dónde empezar? Aprende a medir, prueba el Asistente de Ajuste, o ve qué incluye cada pedido.