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Description
GSPORT Birdcage RimLightweight Structure At first glance the Birdcage looks like a fairly conventional aero style rim, but there is more to it than that. The first clue comes from the name; birds have hollow bones to save weight whilst retaining as much strength as possible, and the Birdcage rim has a hollow bead for the same reason. The rims hollow bead is still big and chunky to help reduce the chances of pinch puncturing or flat spotting the rim, but by creating a
Lightweight Structure - At first glance the Birdcage looks like a fairly conventional “aero” style rim, but there is more to it than that. The first clue comes from the name; birds have hollow bones to save weight whilst retaining as much strength as possible, and the Birdcage rim has a hollow bead for the same reason. The rim’s hollow bead is still big and chunky to help reduce the chances of pinch puncturing or flat spotting the rim, but by creating a tiny hollow cavity inside it, GSport was able to to keep the weight down and make the Birdcage their lightest rim available.
Cross-Lacing Strength - The next innovation was to adapt GSport's cross-lacing design to the narrow inner wall of the rim. GSport managed to squeeze a few extra millimeters of spoke offset out of the design to help increase lateral wheel strength, and by carefully tailoring the rim’s cross-section, they managed to match all the angles to the nipple so that the walls of the rim section act like the ribs inside the Ribcage rim, which helps to support the spoke nipples as much as possible.
Re‑designed Valve Core - Traditionally, the greatest flaw in “aero” rims has been the valve hole. “Aero” rims position a lot of very efficiently utilized mass in the base of the rim to support the spokes and give the rim good strength, then a huge hole is drilled through it for the valve stem and a massive weak-spot is created. With the Birdcage, they've offset the valve hole so that this section can retain its strength. A handy side-effect of this is that fitting a pump is now more convenient.
Easy tire installation and brake pad compatible - Aside from these original features, GSport spent a lot of time “sweating the small stuff”. They've ensured that the deep center allows for easy tire removal and fitting, and we’ve made sure that the sidewalls, while slimmed down, are still suitable for brake use.
Most high tech rim to date - The end result is one of the most high tech rims to date. With a weight of just 440g it outperforms most rims weighing 20-30% more, and the weight saving from the rotational mass of the wheel feels fantastic.
Specifications
Drillings: 36 hole
Weight: 440g
Width: 34mm
Height: 21mm
ERD: 383mm
U.S. Patent 7,427,112
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4.6 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Great oil
Size: 1 Quart, Style: 6-Pack, Configuration: Euro LX 0W-30
Great oil I always use for my vw atlas. I even got an oil analysis after 8k miles and was told it looks great and could be ran even longer.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
This oil is hard to find locally and arrived on time.
Size: 1 Quart, Style: 6-Pack, Configuration: Euro LX 0W-30
This oil is hard to find locally. It arrived on time and every bottle was well sealed so not a drop leaked. It also was priced very fairly.
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Reviewed in the United States on April 8, 2026
★★★★★ 5
This product is saying that it was not yet delivered, but it was delivered.
Size: 1 Quart, Style: 6-Pack, Configuration: Euro LX 0W-30
The product is a very good product, just like all Pennzoil synthetic oil that I have used.
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Reviewed in the United States on February 6, 2026
★★★★★ 5
Superior and Long Lasting Protection
Size: 1 Quart, Style: 6-Pack, Configuration: Euro LX 0W-30
Top performing Motor Oil specially formulated for European Cars with Turbo Chargers
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Reviewed in the United States on November 3, 2025
★★★★★ 5
2nd time is a charm
Size: 1 Quart, Style: 6-Pack, Configuration: Euro LX 0W-30
I purchased this for a DIY oil change on my wife's Infiniti QX30 (power train sourced from Mercedes). Doing it myself, I saved about $70 over the dealership's advertised synthetic oil change. I actually enjoy this type of maintenance work, and I get to pick the parts and fluids used. And I like Pennzoil synthetics better than several other domestic brands.
However, the package as received showed that there was oil leaking from one or more bottles. Amazon had kept the oil in the original Pennzoil case, so Amazon was not to blame for the leakage. I immediately opened the case and cleaned and inspected each quart. Several had caps that were not on tight! I think that overall more than 1/8 of a quart had leaked. I'm glad I was home when the package was delivered, otherwise I would have had an oil stain on my front porch concrete floor. Now that would have really p...ed me off! So Pennzoil needs to better seal their quart bottles (QA issue?) and Amazon should check for this type of issue (it was obvious on the outer Amazon box) and not deliver when there are signs of leakage.
Update - 8/11/23 Purchased a second time for my annual oil change on the QX30. This time the case was delivered without leakage. Buying from Amazon is a big time saver, as the Euro LX 0W30 is difficult to find at retail.
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Reviewed in the United States on August 27, 2022