• Sill Stand reinforcement kit
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Sill Strengthening Kit for Sill Stands — GRP5815

GRP4 Fabrications // GRP5815

$199.00 NZD Exc. GST
$199.00 NZD Exc. GST Sale
Sold out

Need Help?

You can contact us via our chat box on our website, phone or email.

Aaron Harris: +64 27 449 9654 & aaron@harriscomms.co.nz

Rex Harris: +64 21 682 912 & rex@raceradios.co.nz

Shipping & Delivery

New Zealand:

  • Nationwide delivery for just $14 NZD ($19 for helmets).
  • Delivered by NZ Couriers or Post Haste.
  • Delivery Time: 1-7 days (avg. of 1.3).
  • Free Local Pickup is also available from 15 Michael Road, Paraparaumu 5032.

Australia:

  • Standard shipping costs $36.95 AUD ($49.95 for helmets).
  • Delivered by Asendia, DHL Express or FedEx.
  • Delivery Time: 7 - 14 days (avg. of 7.8).
  • For large items we may need to contact you if the freight is higher than expected.

Secure Payment Methods

We accept Apple & Google Pay, Debit or Credit Cards, and PayPal for easy and secure transactions.

Exclusively for our New Zealand customers, we offer Afterpay and Bank Transfer.

Import Duties & Taxes

Please note that your country may charge import duties, taxes and fees that you may have to pay ahead of delivery. If you have any questions regarding this, please get in touch.

The GRP4 Fabrications Sill Strengthening Kit (GRP5815) is designed to reinforce your vehicle's sill area when using sill stands — providing a solid, safe lifting point and protecting the sill from damage during jacking and stand placement.

Essential for any motorsport vehicle regularly lifted on sill stands. Protects the sill structure and ensures a secure, stable contact point every time.

Features

  • Reinforces sill area for use with sill stands
  • Protects sill from damage during jacking and stand placement
  • Designed for motorsport applications — circuit racing, rally, karting
  • Quality fabrication from GRP4 Fabrications
  • Part Number: GRP5815

Why Buy From Harris Race Radios?

Harris Race Radios is NZ and Australia's most experienced motorsport equipment specialist — not just a reseller, but a team of active racing professionals with decades of hands-on experience across both markets.

Aaron Harris is an active racing driver and race engineer — Barcelona 24 Hour 1st in Class 2013, Bathurst 1000 and 12 Hour competitor, BMW Race Driver Series Champion 2011, and race engineer for Earl Bamber Motorsport, TekworkX, Matt Stone Racing, and Porsche Carrera Cup Australia, Asia-Pacific and New Zealand. Aaron is also an MSNZ Licence Examiner for helmets, racewear, FHR and HANS.

✅ Expert advice from active racing professionals
✅ NZ stock — fast dispatch
✅ Ships to Australia
✅ Genuine products

📞 Aaron Harris: +64 27 449 9654
📧 aaron@harriscomms.co.nz

Frequently Asked Questions

What is a sill strengthening kit?

A sill strengthening kit reinforces the sill area of your vehicle so it can safely accept the load of sill stands during jacking. Without reinforcement, repeated jacking can deform or damage the sill structure.

Is this kit suitable for circuit racing and rally vehicles?

Yes. The GRP4 Fabrications GRP5815 is designed for motorsport use across circuit racing, rally, and other competitive disciplines where vehicles are regularly lifted on sill stands.

Does Harris Race Radios stock this in New Zealand?

Yes. NZ stock is held locally for fast dispatch, with shipping available to Australia.

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