17ft x 10ft C-Sport Inground Trampoline Kit

Was Now $3,095

Ultimate bounce on an epic scale! The 17ft x 10ft C-Sport Rectangular Inground Trampoline Kit is our only double vented in ground trampoline - double the airflow - maximum fun! 

• TDU Vented Safety Pads
• Vented Professional Grade Jump Mat
• Seriously Strong & Robust Frame

With the unique combination of TDU™ Vented Pads and Triple Weave Vented Jump Mat the all new 17ft x 10ft C-Sport is not only the biggest in-ground trampoline on the market but with with the ultimate built-in airflow system you are guaranteed an unbeatable bounce on an epic scale!

  • Everything you need Our complete in-ground trampoline kit includes the trampoline, retaining wall and clear instructions.
  • Brilliant bounce Its’ all about the springs. Our in-ground trampolines are the only ones to use a commercial grade spring, we make them extra-long and we use 33% more springs than our competitors.
  • Shhhh We are the only company to use the 100% unique TDU Vented Frame Pads - all the air escapes through the padding, for a better, quieter bounce!
  • Triple weave vented jump mat The only trampoline with vented jump mat AND vented padding, giving you even better jumps!
  • Easy installation We designed our trampolines for DIY installation. Don’t just take our word for it, read our Customer Reviews.

Performance & quality

alt text DualTek Double Strength Frame Made from 2mm thick galvanised steel our frame is extremely strong and designed to be under the ground for many years.
alt text Professional Gold Springs A quality spring will give a better bounce – and last longer! We have been in the business of trampolines for 17 years – we have selected a high quality Pro Gold Springs for our 17ft x 10ft in-ground trampoline which are double-dip galvanised to protect against rusting and stretching of the springs.
alt text Triple Weave Vented Jump Mat + Spring Guard There is an extra piece of material sewn onto the outside of the jump mat to provide additional coverage of the springs, this is called a spring guard. The triple weave adds extra strength to this incredibly bouncy vented jump mat.
alt text TDU Vented Safety Pads The patented Trampolines Down Under vented safety pad allows proper airflow through the pad eliminating 'pad slap' noise, which can occur with other in-ground trampolines, and greatly improves the bounce quality.
alt text Built In Retaining Wall Our purpose designed kit comes with a 4mm thick recycled plastic wall, which can be attached to the frame easily using the pre-drilled holes and the screws provided.
alt text Made in the EU The quality of our in-ground trampolines is of the upmost importance to us. We have carefully selected the highest quality component parts and materials. Our manufacturing process includes an extremely high level of quality control and product testing.

Specification & warranty

10ft x 6ft 11ft x 8ft 14ft x 10ft 17ft x 10ft
Manufacturer Capital Play, Trampolines Down Under (vented pads) Capital Play, Trampolines Down Under (vented pads) Capital Play, Trampolines Down Under (vented pads) Capital Play, Trampolines Down Under (vented pads)
Springs Extra-galvanised 100gsm (to prevent rusting) 68 x 7" 80 x 8.5" 104 x 8.5" 100 x Pro GoldSprings
User capacity 100kg 100kg 120kg 120kg
Jump space (approx.) 8ft x 4ft 9ft x 6ft 12ft x 8ft 15ft x 8ft
Trampoline Frame Heavy duty 275gsm galvanised 50mm diameter, 2mm thick steel frame Heavy duty 275gsm galvanised 50mm diameter, 2mm thick steel frame Heavy duty 275gsm galvanised 50mm diameter, 2mm thick steel frame Heavy duty 275gsm galvanised 50mm diameter, 2mm thick steel frame
Warranty Steel frame & retaining wall: 10 years, jump mat & springs: 5 years, padding: 2 years Steel frame & retaining wall: 10 years, jump mat & springs: 5 years, padding: 2 years Steel frame & retaining wall: 10 years, jump mat & springs: 5 years, padding: 2 years Steel frame & retaining wall: 10 years, jump mat & springs: 5 years, padding: 2 years
Grey - SKU: CISTK170-GY
Green - SKU: CISTK170-GN


What size trampoline should I choose?

A bigger trampoline is always more fun! However, we understand not everyone has the space. We'd always recommend going as large as you can afford - kids only get bigger and these trampolines are designed to last a whole childhood.

Round or rectangle?

This is really a case of personal taste and the design or shape of your backyard. However, rectangular trampolines are great for kids into gymnastics as there is a nice even bounce across the whole trampoline. Round trampolines we think always have the ultimate bounce, but that is mainly in the centre of the trampoline.

How much jump space do you get?

The measurements stated on our website calculates the full size of the trampoline, the springs/padding round the outside take up around 1ft. So for example on a 17ft x 10ft In-ground Trampoline the jump space would be approximately 15ft x 8ft and on a 14ft you'd get around 12ft ft of jump space.

How long will it take to install?

Our trampolines have been designed to install yourself, how long it takes depends on the size of trampoline you choose and whether you dig by hand or hire a minidigger. Digging by hand we'd say allow a weekend to complete the job for most sizes, if you hire a mini digger you'll easily do it in a day. (Excluding the 17ft x 10ft which we suggest allowing at least 2 days with a mini digger).

Do I need to build a retaining wall?

No! Our in-ground trampoline kit has a retaining wall built in, making it even easier to install at home. The retaining wall easily screws onto the frame into pre-drilled holes.

Do I need to hire a mini digger?

This depends on the size of trampoline you choose and how energetic you're feeling! We'd recommend digging the 8ft and 10ft sizes by hand as it's actually easier to get the bowl shape you need with a spade than an excavator. But for the largest sizes hiring an excavator will definitely make less work for you.

How much soil do I need to excavate and how do I dispose of it?

The amount of soil you need to excavate will vary depending on which size trampoline you are installing. For the smaller size trampolines you will fill a 6-yard skip (10ft x 6ft, 8ft) for the medium size trampolines you will fill an 8-yard skip (10ft and 11ft x 8ft) and for the larger trampolines (12ft, 14ft, 14 x 10ft and 17ft x 10ft) you may need to arrange for a grab lorry to come and collect the soil. If you are able to use the soil in your garden for raised beds or levelling ground etc. then you will save the cost of a skip or grab lorry!

Will I need to add drainage beneath the trampoline?

In most cases, a simple soak away as described in the instructions should be sufficient to ensure your trampoline pit drains well. For some gardens that have a high density of clay you may need to consider alternative drainage options such as the ones outlined in our blog.

How much room should I leave around my trampoline?

If you do not have a net on your trampoline then you should leave at least 1.5m around the perimeter of the trampoline to avoid the user bouncing off the trampoline into a potential hazard such as a tree or fence. You should also make sure that there are no hard surfaces within this area such as a stone pathway.

How long does delivery take?

All our in-ground trampolines are send free delivery service which normally takes up to 5 working days. You'll be provided with a tracking link once your order has been dispatched.

How do I look after my Capital In-ground Trampoline?

Fortunately, the Capital In-ground Trampolines are relatively maintenance free! It always helps to prolong the life of your trampoline pads and jump mat if you purchase a cover. Likewise keeping your trampoline clean of general garden debris such as fallen leaves, twigs and mud will help maintain all elements of the trampoline. We recommend that you check all parts regularly and replace any worn out parts as soon as you notice them.

Your installation options

DIY installation

Watch our easy-to-follow 5 minute explainer video to see the installation process step-by-step, this is based on the 11ft x 8ft trampoline but the principle is exactly the same for all sizes.
Watch Video Download PDF instructions
Trampoline size/outer hole dimensions Inner holedimensions Hole Depth
10ft x 6ft (10ft x 6ft) 8ft x 4ft 30"
11ft x 8ft (11ft x 8ft) 9ft x 6ft 30"
14ft x 10ft (14ft x 10ft) 12ft x 8ft 36"
17ft x 10ft (17ft x 10ft) 15ft x 8ft 40"

Use your own installer

Whilst we have designed these trampolines for easy DIY installation we understand DIY isn’t for everyone. You are welcome to source your own landscape gardener or builder, feel free to share the the link below to our installation page to enable you to get a quote.

Installation Instructions