FAQ

Not all bike carriers are made equal, and some are more suited for the slide and tilt function of the 2UP rack compared to others. The Rockymounts Brass-Knuckles / Rhino Rack Hybrid is 4TK Racks' number one pick! Very sturdy (Bike Weight rating of 21kg), mounts easily to the 2UP T-Slot tracks, no frame contact (holding only onto the wheels), and VERY quick and easy to use with the 2UP Rack in the tilted/deployed position. You'll see the Brass-Knuckles Rack used in most of 4TK Racks' marketing videos. With the 21kg rating, it can be used with most E-bikes too. The Rhino Rack Hybrid is almost identical to the Brass-Knuckles, sharing all components except the locking mechanism onto the top of the bike's front wheel. Rhino Rack have instead used the locking mechanism from Rockymounts Tomahawk Rack, which is the better locking mechanism in our opinion. The 'Brass-Knuckle' handle portion of the Brass-Knuckle Rack comes a little too close to the Fork Lowers on bigger bikes for my liking, while the Rhino Rack Hybrid doesn't have this 'feature', and leaves plenty of room. For that reason, the Rhino Rack Hybrid is just a smidge better. For both the Brass-Knuckles and Hybrid, weight is its biggest downfall, weighing in a 7.6kg, which is a consideration for when you're wanting to run 4x Bikes (see weight section). This is fairly on par though with any of the non frame contact bike carriers. The Thule Upride 599 weighs 7.7kg. It's also on the more expensive end of roof mounted bike carriers. #RBC050 - Hybrid Bike Carrier | (rhinorack.com)(https://www.rhinorack.com/en-au/products/sport-awnings/bike-carriers/roof/hybrid-bike-carrier_rbc050) https://static.wixstatic.com/media/63810b_10ff3dadc725475db4d700a103769e32~mv2.png If you're looking to run 4x identical racks that function well and are good looking, the Thule Proride 598 is a good option. They're relatively light weight at only 4.2kg (see weight section), and work nicely with the 2UP rack in its tilted/deployed position. They're easy to fit too with 4TK Racks' adaptor kit. The key downside of the Proride is that they make contact on the bike frame, but not everyone cares about a few blemishes on their frame, and also that it only has a rating of 17kg. For ultra-light weight, it's hard to beat the Thule Freeride 532, weighing in at only 3.2kg. The 4TK Racks promo vehicle has 2x Brass-Knuckles as we like them so much, and 2x Thule Freeride to help keep the weight down. This is sufficient to carry the 4x bikes we want and still stay under the legal 100kg rating for the Ranger. The Thule Freeride is easy to mount to the 2UP Rack with 4TK Racks' adaptor kit, but 4TK Rack recommend you beef up the wheel holders to assist with loading when the 2UP Rack is tilted (also included in the adaptor kit). The main annoyance with the Freeride in our experience is if you're frequently running different bikes. The clamp arrangement has to be wound in/out to suit the frame, and it's just annoying to do to suit the different frame sizes. Otherwise, we love it - simple and cheap, but still plenty robust and effective. The Rockymounts Tomahawk is similar to the Brass-Knuckles, but isn't as slim line (it is cheaper though). It mounts easy enough to 2UP racks with the right adaptor kit too. It only has a bike rating of 18kgs vs the Brass-Knuckles/Hybrid's 21kg though. We've found the Thule Upride 599 works quite well when loading in the 2UP Rack's Tilted position, and it's got probably the best locking mechanism of the lot, but when mounting with their T-slot system, we've found there is a lot of 'flex' in the base plate, and the bike wobbles around a lot when driving, even though this is how Thule have specified it to be clamped. If using the clamp system where it clamps around the Roof Rack Cross Bar, it picks up on 4 points across the Bike Rack base, and significantly stiffens up their rack, but unfortunately that clamp around system can't work with the 2UP rack. For the 2 bolt T-slot arrangement, Thule have a very thorough test program and you can be sure it's not going to fall off, but it is still very unnerving. The Yakima Highroad looks to be a good contender, but 4TK Racks have not yet tested it. The Yakima Frontloader uses a clamp around system which won't work with the 2UP Rack. 4TK Racks are presently designing adaptors that will allow them to mount to the 2UP, but know that the Frontloader will have to sit up relatively high off the 2UP Rack. Summary: If you're running only a couple of bikes, get the Rhino Rack Hybrid (or Brass-Knuckles) - it's a no brainer. If you're wanting to run 3-4 bikes, consider getting 2x Rhino Rack Hybrids and 2x Thule Freerides, or getting 4x Prorides or 4x Freerides if you want all Bike Racks to be the same.

You betcha! Being Australian made is very important to 4TK Racks. With the exception of things like fasteners and bearings etc, all components are 100% Australian designed, sourced, and manufactured. All aluminum extrusion is sourced from Ullrich, and then the racks are then manufactured in Canberra and Jindabyne, and then assembled in Jindabyne. We believe that people are prepared to pay a little premium knowing that they're supporting the local economy, and receiving a quality product

YES! The 2UP Racks have been designed to, and have been load tested to AS1235:2000 & ISO/PAS 11154:2023. This requires a series of tests to be completed, all of which passed: • Vertical Lifting Force – 2500N (254kg). • Longitudinal Force – 2000N (204kg). • Longitudinal Force at 20deg - 2000N – (204kg). • Lateral Force - 1000N (102kg) • Lateral Force (opposite direction) - 1000N (102kg) For the above tests, that is per 2UP Rack at 50kg rating. 2x 2UP Racks can be installed per cross bar. https://static.wixstatic.com/media/63810b_45daa892ddfd445995b1458f9c7f8fbf~mv2.png Vertical Load Test - hold for 10mins. No plastic deformation observed Note regarding vertical load test: This test is to reflect large the wind forces exerted on large surfboards or similar with a large surface area overhang. This test considers roof racks that are the full width of the car with a 100kg test load pushing down against the vertical load. With only a 50kg load rating spread over the two cross bars, this test is 254kg (2000N) on the front cross bar member only - effectively an 8x overload test. The flex observed is actually primarily in the 3rd party cross bar (conventional roof rack) member - it bends over 20mm! The 2UP Rack is designed to be able to flex at this joint to accommodate any misalignment between the two cross bars. With the load removed, the 2UP Rack (and 3rd party cross bar member) returned to its relaxed state, and functions remain unaffected and no deformation observed - pass! (Full youtube videos will be uploaded in time. https://static.wixstatic.com/media/63810b_8a6631edb3df45978b458f4a97eb2958~mv2.png Lateral Load Test - 3.04mm deflection. Under 10mm is considered a pass https://static.wixstatic.com/media/63810b_e28c4459bc564abf84626b72b1c0f085~mv2.png Lateral Load Test Opposite Direction - 3.94mm deflection. Under 10mm is considered a pass https://static.wixstatic.com/media/63810b_d2e523366dc6463eb411ad472ac6ab17~mv2.png Longitudinal Test at 20deg. 2.94mm observed at 1000N (Under 10mm is considered a pass). 8.89mm observed at 2000N (Under 50mm is considered a pass)

Built completely of aluminium extrusion and stainless steel fasteners, you can be sure 4TK's racks will stand the test of time, even if you live by the coast. All exterior aluminium extrusion is either anodized in black or clear, with anodizing being far superior to powdercoat when dealing with harsh elements. Even the sliding track mechanism was chosen because of its corrosion resistant materials - anodized aluminium track with nylon coated wheels and stainless bearings, compared to your conventional telescopic track slides which are typically just zinc coated steel.

We aim to dispatch your order within 5 business days of full payment being received for in-stock items. You’ll receive email notifications and tracking number so you can follow the delivery progress.

Special Orders are still standard sizes, but not as common. We have drawings, templates, CNC code, etc already prepared. These orders are typically filled within 2 weeks. Custom Orders are for when the customer wants something beyond the standard sizes. The additional fees cover time spent making new drawings and templates, and for updating the CNC code. These orders are typically filled within 2-4 weeks.