NTR Zipline Spring Brake Extra Long 6.6ft – Heavy-Duty Backyard Zip Line Stopper (Up to 3/8" Cable)

Enhance backyard zipline safety with the NTR Zipline Spring Brake

Designed for backyard fun, the NTR Zipline Spring Brake brings an extra-long, high-strength compression stainless steel spring into a compact, weather-ready package. The system is tailored for zip lines under 200 ft and supports cables available in 3/16, 1/4, 5/16, and 3/8 inches. Along with a smooth, controlled braking feel, this brake helps riders glide toward a calm stop, inviting families to enjoy the moment as they approach the landing zone.

Key fit and performance

• Compatible with 3/16, 1/4, 5/16, and 3/8 inch zipline cables for a wide range of backyard setups.
• Safe slope range of about 2°–3° and a stopping drop of roughly 3–5%; for longer lines or heavier riders, add two, three, or four springs for extra stopping power.

The 6.6 ft compression spring prioritizes braking force over mere length, delivering a responsive feel as the rider nears the stop. The stainless steel construction resists weathering, extending service life and maintaining a steady performance across seasons. In real-world use, you’ll notice a smoother transition from glide to halt, even after days of sun, rain, or seasonal temperature shifts.

Durable craftsmanship you can trust

• One-piece rubberized stoppers are molded in a single process, eliminating cracks and gaps where failures often occur.
• The spring and stoppers are bonded to reduce movement from temperature shifts, delivering consistent performance year after year.

This brake is built for longevity and straightforward maintenance, making weekend setups easier and more predictable whether you’re testing after school or hosting a backyard party with friends and family.

Fast, tool-free installation

Install in 1–2 minutes without tools. Simply feed the zipline cable through the rubber ends, secure, and you’re ready to test the brake—compact hardware that remains durable under outdoor conditions and frequent setup/teardown cycles.

Value, warranty, and support

NTR emphasizes value without compromising safety. Production improvements help keep costs down while preserving quality, and a full warranty provides confidence for families. If you’re not completely satisfied, contact us for support.