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Ships within 48 hours · Estimated delivery Sep 3 - Sep 8
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Description
Banks Power 20-21 Ram 1500/Jeep JL 3.0L EcoDiesel Derringer Gen2 Tuner w/ iDash 1.8Results in torque and power gains across the full operating rpm range, starting right off idle and marching to the shift point in each gear. Derringer is dyno calibrated to use multiple data inputs such as throttle position, rpm, vehicle speed, AFR, knock, coolant temperature, and EGT, just like your engines ECM. It actively and safely optimizes calibrations in real time thanks to its OBD II connectivity. No competitive tuner does that. Derringer has
Results in torque and power gains across the full operating rpm range, starting right off idle and marching to the shift point in each gear. Derringer is dyno calibrated to use multiple data inputs such as throttle position, rpm, vehicle speed, AFR, knock, coolant temperature, and EGT, just like your engines ECM. It actively and safely optimizes calibrations in real-time thanks to its OBD-II connectivity. No competitive tuner does that. Derringer has 6 levels, adjustable on-the-fly using the iDash. Level 6 produces best-in-class performance. Level 3 is designed for work use and has a great mid-range feel. When running Level 3 with a loaded truck and/or pulling a trailer, your on-ramp merging speeds and passing times are greatly improved. The electronics are enclosed in a compact housing which is easily concealed and communicates with other Banks devices such as our iDash DataMonster, iDash SuperGauge, and PedalMonster throttle booster. The Derringer connects in line with your trucks engine sensors. But unlike other tuners, it also connects to the vehicles OBD-II diagnostic bus. ActiveSafety health monitoring circuitry keeps an eye on the vehicle and the module itself. It checks its health 100 times a second. If it detects an issue, the Derringer instantly bypasses itself, sets a device diagnostic code, and seamlessly returns the truck to stock power. Plus, Derringers special coolant temp monitoring prevents power addition when the engine is too cold or overheated. The Derringer also auto-adjusts power if knock occurs due to bad fuel. Maximum safe power is all automatic with a Derringer — you just choose your preferred power level and enjoy the ride.This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2021 | Jeep | Gladiator | 80th Anniversary |
| 2022 | Jeep | Gladiator | Altitude |
| 2021-2022 | Jeep | Gladiator | High Altitude |
| 2021-2022 | Jeep | Gladiator | Overland |
| 2021-2022 | Jeep | Gladiator | Rubicon |
| 2021-2022 | Jeep | Gladiator | Sport |
| 2021-2022 | Jeep | Gladiator | Sport S |
| 2021 | Jeep | Gladiator | Texas Trail |
| 2021-2022 | Jeep | Gladiator | Willys |
| 2021-2022 | Jeep | Gladiator | Willys Sport |
| 2021 | Jeep | Wrangler | Unlimited 80th Anniversary |
| 2021 | Jeep | Wrangler | Unlimited Freedom |
| 2021-2022 | Jeep | Wrangler | Unlimited High Altitude |
| 2021 | Jeep | Wrangler | Unlimited Islander |
| 2020-2022 | Jeep | Wrangler | Unlimited Rubicon |
| 2020-2022 | Jeep | Wrangler | Unlimited Sahara |
| 2021-2022 | Jeep | Wrangler | Unlimited Sahara Altitude |
| 2020-2022 | Jeep | Wrangler | Unlimited Sport |
| 2021-2022 | Jeep | Wrangler | Unlimited Sport Altitude |
| 2020-2022 | Jeep | Wrangler | Unlimited Sport S |
| 2021-2022 | Jeep | Wrangler | Unlimited Willys |
| 2021-2022 | Jeep | Wrangler | Unlimited Willys Sport |
| 2020-2022 | Ram | 1500 | Big Horn |
| 2022 | Ram | 1500 | HFE |
| 2020-2022 | Ram | 1500 | Laramie |
| 2020-2021 | Ram | 1500 | Laramie Longhorn |
| 2020-2022 | Ram | 1500 | Limited |
| 2021-2022 | Ram | 1500 | Limited Longhorn |
| 2020-2022 | Ram | 1500 | Lone Star |
| 2021 | Ram | 1500 | Longhorn |
| 2020-2022 | Ram | 1500 | Rebel |
| 2020-2022 | Ram | 1500 | Tradesman |
| 2019 | Ram | 1500 Classic | Laramie |
| 2019 | Ram | 1500 Classic | SLT |
| 2019 | Ram | 1500 Classic | Tradesman |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
Perfect. A must have!
Size: XX-Large, Color: Nude
Perfect fit! After 2 battles with breast cancer and breast reconstruction I find it very difficult to find strapless or any bra for that matter that fit and are comfortable … this bra not only fits it stays put! I have purchased some pricey ones in the past but this gives a lot of bang for your buck. I also love the fact it stays in place- has rubber like adhesive that sticks to your skin and has no wires. I feel mangled after basically being amputated by a double mastectomy- I worry about the bra falling down exposing the fact I have no “nips” because cancer took all that away from me. Additionally, I like that it comes with removable straps for adjustability for extra support if needed. The quality seems to be good but I have yet to wash, just like any bra - gentle cycle wash and a flat air dry will extend the life of the bra.
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Doesn't slip down
Size: XX-Large, Color: Black
Holds up very well for day to day work and doesn't slip down. Came with straps as well. Material feels great. I would base sizing off of your usual band size more than cup. Got a XXL when measured I'm usually a 38B or 36C and those sizes are too small to be comfortable and it said I'd match with a large so I went up based upon my bra experiences. Pink color isn't really a good pink tone more closer to nude and dull if anything. But all the other styles and colors are great. It feels very supportive and covers all the right places while smoothing out back rolls. It's a good stretch when you put it on to and then conforms to the chest. Pads are a little over the place but they're removable so that's expected.
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Reviewed in the United States on May 14, 2026
★★★★★ 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
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