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Description
OEM HONDA CIVIC SI RBC INTAKE MANIFOLD 17100-RRB-A00This is by far the best intake manifold Honda has made as far as power is concerned. The RBC manifold out performs the PRB and PRC manifolds almost everywhere. There is a little loss in power from low to mid range rpm but from the 5500rpm point and up the RBC takes the win by a good bit. Proven Power The dyno graph above shows the difference in power gains. The red line is the RBC manifold and blue is the PRB manifold. As you can see, the PRB makes
This is by far the best intake manifold Honda has made as far as power is concerned. The RBC manifold out performs the PRB and PRC manifolds almost everywhere. There is a little loss in power from low to mid range rpm but from the 5500rpm point and up the RBC takes the win by a good bit.Proven Power
The dyno graph above shows the difference in power gains. The red line is the RBC manifold and blue is the PRB manifold. As you can see, the PRB makes power to 7400rpm before falling off and the RBC keeps making power all the way to redline. All testing was done on an 06' RSX-S with a DC Sports Header and Cold Air Intake.
MUST BE MODIFIED to fit K20A/A2/A3/Z1 & K24A1 cylinder head
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4.7 ★★★★★
Based on 261 reviews
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Product Reviews
★★★★★ 4
An excellent strapless option
Size: XX-Large, Color: Nude
Extremely comfortable! It didn’t slip down like some do, so I don’t feel the need to tug it up. Felt like I wasn’t wearing anything at all. I also like that it comes with optional straps. Great coverage. The two things to watch for is the top seam is a little thick, so it won’t work under thin tops, and the pads will move around, but they are easy to adjust or remove. On the whole I find this a great fit and easy to wear, at an excellent price point.
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Great!
Size: XX-Large, Color: Nude
REVIEW FROM A REAL PERSON WITH NO FINANCIAL INCENTIVES
This is my first time ever wearing a strapless bra and I really like this one! It's very comfy and feels like wearing any other sports bra just, well, without the straps (though they do include straps in the box that you could attach if you wanted). I'm somewhere around a 40DDD and got a 2x and it fits well, though I did wear it to work one day and by the end of the day, it did feel like it was digging/squeezing into my side a bit too much (however it had been 10hrs by then). The bra IS stretchy but if I were really any bigger, I think I'd want to go to a 3x.
Only very minor issues with it slipping, nothing even close to where I was worried anything was going to pop out or anything, even after being out in 90F heat.
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Reviewed in the United States on May 29, 2026
★★★★★ 3
Stays in place
Size: Medium, Color: White
I’d give the Letts Jolli Push-Up Strapless Bra a solid 3 stars. The fabric quality is actually really nice—it feels soft, smooth, and comfortable against the skin, which is a big plus for something strapless. It also does a great job staying in place. I didn’t have to constantly adjust or worry about it slipping down throughout the day, which is usually my biggest concern with strapless bras.
That said, the “push-up” aspect was a bit disappointing. It didn’t really provide much lift or enhancement like I expected, so if you’re looking for noticeable cleavage, this might fall short.
Overall, it’s comfortable and reliable for staying put, but it doesn’t quite deliver on the push-up promise.
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Reviewed in the United States on April 1, 2026
★★★★★ 5
It holds the girls up!
Size: Large, Color: Nude
This is absolutely the best strapless bra I have ever owned! It stays put, doesn’t ride up or ride down & I don’t have to adjust it. It fits true to size. Worth the money! It’s also not the sexiest bra, but when you just want a strapless bra that holds the girls up, I promise it will do that!
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Will be my go to strapless for sleeveless everything
Size: Medium, Color: Nude
Ok so, this did not disappoint. Supportive and has cups/padding so there's no show through. Stays in place. Sturdy will not roll on you or stretch out half way through your day/ evening. Straps are included but not necessary.
Do not try to put on right out of the shower. You also need to step into it to pull up. Do not try to pull it over your head.
Perfect for under spaghetti string tops/tube tops.
I am 135 lbs, 34DD or a 36D depends on bra. I bought a medium and it holds everything tight. I believe I could also go with a large at this weight to have a little less compression.
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Reviewed in the United States on May 17, 2026