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The Nitrofit Limber Pro is built to fit users from 5'0" up to 6'5". Its patented sliding seat features seven adjustment positions, allowing you to move the seat forward or backward to match your exact height, leg length, and reach for proper alignment during every stretch.

The Limber Pro is a professional-grade seated stretch machine designed for safe, controlled flexibility training at home. It targets all major muscle groups including hamstrings, quadriceps, hips, gluteals, lower back, groin, and calves.

The Limber Pro supports up to 300 lbs. Its heavy-duty steel frame ensures stability and durability for users of all sizes.

Yes. The Limber Pro includes a calf stretch board that adjusts to three angles — 16°, 23°, and 30°. It can also be removed quickly for storage by pulling the release pin that connects it to the front of the machine.

The Limber Pro measures 50.5" L x 22.4" W x 38.5" H and weighs 56 lbs (packaged weight: 69 lbs).

The Nitrofit Limber Pro supports 12 total stretches—nine shown on the built-in instructional placard and three additional bonus stretches demonstrated in the online video guide. It targets all major flexibility areas, including the hamstrings, quadriceps, hips, glutes, lower back, upper back, groin and inner thighs, calves, Achilles, and shoulders. Its adjustable sliding seat and dual-grip handlebars also allow a true hip-flexor lunge stretch, something no other seated stretch machine can perform due to their fixed-seat designs.

Yes. The Nitrofit Limber Pro Full Body Stretch Machine is widely praised by chiropractors and rehabilitation professionals for its controlled, progressive stretching capabilities. Many clinics have transitioned from older fixed-seat stretch machines such as the Precor models to the Limber Pro because its adjustable sliding seat allows patients of all sizes to be properly aligned during each stretch. Practitioners also value the integrated calf-stretch slant board, which supports targeted calf and Achilles stretches that can help address issues contributing to lower-back discomfort.

Daily use is ideal, but even several sessions per week is enough for most users to notice improvements in flexibility, mobility, and sometimes even sleep quality. Some people feel benefits within just a few sessions, but long-term progress comes from consistency so the muscles stay limber.

Absolutely. The machine is designed to guide your body into safe, controlled positions. Beginners appreciate the stability and support, while experienced users enjoy the ability to deepen stretches safely.

Orders are processed within 1–2 business days and typically arrive within 3–7 business days via standard ground shipping. You will receive a tracking number once your order ships.

We offer a 30-day money-back guarantee. If you're not satisfied, contact our support team for a return authorization. The machine must be returned in its original packaging with all accessories.

We ship within the Contiguous United States and Canada. For international inquiries, please contact our support team for a quote and we will assist with availability and shipping options for your region.

The Nitrofit Limber Pro includes a two year warranty on the frame and 1 year warranty on wearable parts such as cushions and handle grips in non-membership paying facilities.

Contact our customer service team with your order number and a description of the issue. We'll arrange a repair or replacement at no cost for valid claims within the warranty period.

Setup typically takes 35–45 minutes. Your Limber Pro arrives with all necessary tools and a fully illustrated instruction guide. For the smoothest experience, we recommend scanning the QR code on the first pages of the manual to access our step-by-step assembly video.

You can also watch the video in the Reviews section, on YouTube, or directly here.

Ensure the seat pin is fully inserted into one of the 7 rail holes, then tighten the knob clockwise until snug. A very small amount of side to side play is normal even after tightening.

Clean the rail with a dry cloth to remove dust and debris, then apply a small amount of silicone-based lubricant (never oil or WD-40, which attract dust). Wipe away any excess so the rail stays dry to the touch.

Apply a small amount of silicone-based lubricant to the spring-loaded metal ball at the end of the pin, then insert the pin through the board and the front of the machine. Tap the ball-handle until the pin passes completely through the machine and seats into the eyelet on the opposite side of the slant board.

Make sure the acorn nuts that secure the frame to the legs are fully tightened; if any are loose, the machine can lean or feel unlevel.

Handle sleeves rarely suffer shipping damage, and we design our packaging to protect them as much as possible, though issues can still happen. If your machine arrives with damage, contact us for a replacement foam sleeve. It slides on easily with a little soap and water. If your sleeves wear out sooner than expected during normal use, let us know because they are covered under our one-year warranty.

Cushions are considered wearable parts and are covered by the warranty for one year. Reach out to our support team with your order number and a photo of the affected cushion, and we'll arrange a replacement at no cost for valid claims within the warranty period. If your machine is out of warranty, replacement cushions are available for purchase in the parts section of the website.

If your machine arrived missing hardware or with any shipping damage, we'll take care of it right away. Please contact us and we'll send the replacement parts or components you need. Everything is covered under our support policy, and we'll make sure your machine is fully functional as quickly as possible.