Zipdiz Ninja Slackline Spring Brake Kit (Silver)
"Must-have safety upgrade for any backyard ninja line! The slider pulley stops with a gentle, cushioned deceleration instead of jarring into the tree strap. Easy 2-minute setup." — Verified Buyer (★★★★★ 4.9/5 from 18 reviews)
🎁 Bundle & Save: Buy any 2 accessories and automatically get 10% off at checkout! Plus, use code HALLOWEEN10 for additional seasonal savings and free US shipping on orders over $99.
Protect your backyard ninja warrior riders and equipment from sudden stops. The Zipdiz Ninja Slackline Spring Brake Kit is custom engineered specifically for standard 2-inch (50mm / 5cm) flat slackline webbing courses. Featuring a patented flat-channel end buffer design and an industrial 50 cm (1.64 ft) stainless steel compression coil, this brake gently absorbs forward kinetic energy when the Zipdiz Ninja Slider Pulley approaches the finish anchor, delivering a safe, gradual, and reliable deceleration without jarring impacts.
🛡️ Patented Safety & Engineering Highlights
- Engineered Exclusively for 2" Flat Slacklines: Features precision-slotted end plugs designed to slide cleanly along 2-inch (50mm) wide ninja obstacle webbing without bunching or twisting.
- 50 cm Heavy-Duty Compression Spring: 1.64-foot industrial 304 stainless steel coil delivers progressive resistance to smoothly decelerate riders up to 250 lbs (113 kg).
- High-Density Rubber Impact Buffer: Durable shock-absorbing rubber stopper cushions the initial point of impact between the slider pulley and the brake coil, preventing metal-on-metal wear.
- Heavy-Duty Stainless S-Hook Anchor: Connects the stationary end of the spring brake to your end tree strap or anchor point to maintain optimal tension and braking position.
- Weatherproof All-Season Durability: Solid stainless steel spring and UV-resistant end components endure rain, sun, humidity, and winter weather without rusting or degrading.
📏 Technical Specifications
| Spring Length | 50 cm (1.64 Feet / 19.7 Inches) |
| Spring Material | Industrial 304 Stainless Steel Compression Coil |
| Compatible Webbing Width | Engineered for 2.0 Inch (50 mm / 5 cm) Flat Slackline Webbing |
| End Buffer Stopper | High-Density Impact-Absorbing Rubber Buffer |
| Anchor Hardware | Heavy-Duty Stainless Steel S-Anchor Hook & Retainer |
| Rider Weight Capacity | Supports Riders up to 250 lbs (113 kg) |
| Safety Standards | Meets CE & ASTM Toy Safety Standards |
🔧 Quick 3-Step Installation
- Step 1 — Thread Before Tensioning: Feed the loose end of your 2-inch ninja slackline webbing through the slotted rubber buffer and spring coil before ratcheting the line tight.
- Step 2 — Position Distance: Slide the spring brake along the line so it rests approximately 8 to 12 feet away from the finishing tree or anchor point.
- Step 3 — Secure Anchor Hook: Attach the stainless steel S-hook to the spring end and secure it to your slackline ratchet strap to prevent sliding during rider impact.
📦 What's Included in the Box
- 1 × Zipdiz 50 cm (1.64 ft) Stainless Steel Ninja Slackline Compression Spring
- 1 × Pre-Assembled High-Density Rubber End Stopper Buffer
- 1 × Heavy-Duty Stainless Steel S-Anchor Hook
- 1 × Setup & Safety Instruction Guide
🤝 CTSC & Zipdiz Quality Guarantees
- 1-Year Manufacturer Warranty covering all spring and anchor components
- 30-Day Money-Back Guarantee
- Free Express US Shipping on orders over $99 (delivered in 3–4 business days)
❓ Frequently Asked Questions
Q: Will this spring brake work on round steel zipline cables?
A: No. This model is specially engineered with slotted end guides for 2-inch flat webbing slacklines. For round steel wire cables (3/16" to 3/8"), please select our CTSC 5.9ft Stainless Steel Zip Line Spring Brake.
Q: Does the slackline need to be uninstalled to put this brake on?
A: Yes. Because the slackline webbing passes through the center of the spring and slotted end plugs, the ratchet strap must be unthreaded to slide the brake onto the line before tensioning.
- Supports up to 800lbs
- CE & RoHS Certified
- Designed and tested with your safety in mind.
1、In order to make your order to arrive more quickly and securely, we will deliver the goods within 24 hours after receipt of order payment. Please ensure that your order address is correct.
2、Before delivery, we will inspect and pack the goods to ensure that the goods received by our customers are in good condition. If there are any problems with the goods, please contact us at the first time.
3、We offer free delivery service,express delivery is estimated to be delivered within 3-4 days.The shipping time during Holiday Season (Christmas etc) could be longer than usual time. Please add another 5-10 days as a delay.
Note：if your shipping address is in a remote area, the express delivery service will require additional delivery costs, and we will not pay for this freight. So we will contact you for the first time, and you need to pay the freight, then we will deliver the goods.
We promise to do the right thing. Over the years, every decision and product we make is focused on customers. Our goal is to bring more joy to those who believe in us. We should be responsible for doing the right thing and the right way.
The products we produce bring laughter to our customers, and we are truly proud of them. If our products cause trouble to our customers, we sincerely feel sorry and try our best to make up for our mistakes. Customer satisfaction is our eternal pursuit.
We promise never to exaggerate the quality of our products. We strictly test every product to ensure that it meets the safety standards and passes the quality certification.
We promise if there are any problems with our products, please contact us in the first time, or you can request a return or refund within 30 days of receiving the product, but please contact us before returning，you just pay for the return shipping. No strings attached.
After using our products，if you are satisfied with our products and services, please 5 stars, if you are not satisfied, please contact us at the first time, we will handle it for you and make you satisfied.
1、Please strictly follow the instructions and ensure the installation is solid.
2、Kids under the age of 10 need to use zipline under the guidance of adults or guardians.
3、Strictly follow kids and adults with a weight limit of 250 pounds.
4、Heart disease and hypertension patients, pregnant women, please do not use products, in order to avoid accidents.
5、Installation between two trees or ends is required, and there is a clear runway between the two without shelter, preferably with a slight slope in the middle of the runway.An end-to-end slope of 3-6%.
Instruction Book Installation Manual: For Installation Video Please See Blog
