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Description
1984-1988 G-Body Crossmember 4L80 RCG-4L80Fits Models: GM RWD G Body; Malibu, Monte Carlo, El Camino, Cutlass, Grand Prix, Regal, Century, LeMans, Caballero, Bonneville Fits Years: 84 88 Fits Transmissions: 4L80, 4L85E We recommend a polyurethane transmission mount. The GMTM is sold separately. If you have a 78 83 vehicle G Force has developed a frame extension, GF FE100 to duplicate the factory driver side longer frame rail. The frame extension is sold separately, or can be purchased in a
- Fits Models: GM RWD G-Body; Malibu, Monte Carlo, El Camino, Cutlass, Grand Prix, Regal, Century, LeMans, Caballero, Bonneville
- Fits Years: 84-88
- Fits Transmissions: 4L80, 4L85E
- We recommend a polyurethane transmission mount. The GMTM is sold separately.
- If you have a 78-83 vehicle G Force has developed a frame extension, GF-FE100 to duplicate the factory driver side longer frame rail. The frame extension is sold separately, or can be purchased in a kit, RCG-4L80K, which includes both the crossmember and the frame extension.
- The primary frame change on the 1978-1988 generation of GM G-Body vehicles begins with 1984 models and the implementation of the 2004R transmission which required positioning the crossmember further to the rear of the vehicle. This is evidenced by two sets of frame holes for the crossmember on the driver side of the vehicle.
- Note: Some 1983 Hurst Olds are known to have the 2004R transmission and thus the longer frame rail which does not require the GF-FE100 frame extension that is included in this Kit. Some 1984 El Caminos retained the early frames and do require an GF-FE100 frame extension to run this crossmember.
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1984-1986 | Pontiac | Bonneville | |
| 1984-1987 | GMC | Caballero | |
| 1984-1988 | Oldsmobile | Cutlass Supreme | |
| 1984-1987 | Pontiac | Grand Prix | |
| 1984-1988 | Chevrolet | Monte Carlo | |
| 1984-1988 | Buick | Regal |
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Exchange/Return Notes
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4.2 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 3
Meh
Color: Black
It's ok. I got it because it looked like it has more cushion and might be more comfortable. Nope. It's the same comfort level as different chairs. My reer still goes numb and gets uncomfortable in this chair. Also, where your arms sit, the chair arms are slightly curved upwards and it causes my chair to be unable to fit under my desk. If they weren't slightly curved, that wouldn't happen. It's just another chair, nothing spectacular.
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Reviewed in the United States on June 13, 2026
★★★★★ 5
Solid quality and comfortable
Color: Light Grey, Color: Light Grey
Wonderful quality chair, solid and sturdy, it was easy to put together, the directions were very clear and all the pieces fit together perfectly without issue. It is made of breathable material and I love that the arms flip up easily. You can raise it up or down and it has an adjustable headrest. It also has adjustable lumber support. It rolls easily and the color is the only reason I might return, I think I want a different one instead. The chair is comfortable for a petite person but equally comfortable for a tall person. We have both in our family and it is great for both. The armrests are comfortable and there is really nothing negative to say about this chair at all. Considering the quality, it is a great value for the money.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Comfortable and Sturdy Office Chair
Color: Black, Color: Black
I’ve been very happy with this chair so far. The quality feels solid, and the materials look durable. The color matches the listing perfectly and fits nicely with my office setup. It’s very comfortable for long periods of sitting, with good support for my back and shoulders.
Assembly was straightforward, and all the parts were included. The chair looks modern and professional, and the overall appearance exceeded my expectations. It feels stable and secure, even when reclining or moving around. The wheels roll smoothly, and the chair is easy to adjust for a comfortable fit.
Overall, this is a well-made, comfortable, and attractive office chair that offers great value for the price.
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Reviewed in the United States on June 6, 2026
★★★★★ 5
Comfortable and easy to set up
Color: Black, Color: Black
I’m happy with this chair. It was not hard to assemble, and it feels stable after putting everything together. The mesh back is comfortable and breathable, so it doesn’t feel too hot when sitting for a while. The seat cushion is also thicker than I expected and feels soft enough for daily use. I like the adjustable headrest and the back support, especially for working at a desk. The chair looks simple and clean, and the wheels move smoothly. Good value for a home office chair.
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Exactly the Desk Chair I Was Looking For
Color: Black
had been needing a new desk chair for a while, and this one has been a great addition to my workspace. I use it every day while working, and it feels very comfortable, even when sitting for long periods of time. The seat provides good support, and the backrest helps me stay comfortable throughout the day.
Assembly was straightforward, and the instructions were easy to follow. I also like how well it fits in my workspace and how nice it looks. So far, I am very happy with the comfort and overall quality. It has definitely made my workdays more enjoyable.
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Reviewed in the United States on June 8, 2026
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