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Ships within 48 hours · Estimated delivery Oct 1 - Oct 6
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For Your Every Summer RSVP, with Code: SUMMER15
Description
B&M Shift Improver Kit - GM TH400/475 Transmissions - 20261Overview: The B&M Shift Improver kits feature two options to recalibrating your 1988 1994 GM TH400 and TH475 automatic transmissions. First is the HEAVY DUTY set up, giving you firm positive shifts without loss of driver comfort for improved performance in all street vehicles. This is a great option for performance street driving or towing. The second is our STREET STRIP set up. Be warned, this will deliver firm positive shifts you will feel, along
Overview:
The B&M® Shift Improver kits™ feature two options to recalibrating your 1988-1994 GM TH400 and TH475 automatic transmissions. First is the HEAVY DUTY set-up, giving you firm positive shifts without loss of driver comfort for improved performance in all street vehicles. This is a great option for performance street driving or towing. The second is our STREET/STRIP set-up. Be warned, this will deliver firm positive shifts you will feel, along with easily chirping the tires when shifting somewhat aggressively. This setting is recommend for high performance street/strip use, or for competitive events when you want the hardest, quickest shifts possible from a shift improver kit.
Features:
- Perfect for Off-Road, Towing or Street/Strip Use
- Eliminates Soft and Sluggish Shifts
- Over 65 Years of B&M Quality
- Eliminates Shift Overlap
- Provides Crisp Shifts
- Easy Installation
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1988 | Chevrolet | R20 | Custom Deluxe | |
| 1988 | Chevrolet | R20 | Scottsdale | |
| 1988 | Chevrolet | R20 | Silverado | |
| 1988 | Chevrolet | R20 Suburban | ||
| 1989 | Chevrolet | R2500 | ||
| 1989 - 1990 | Chevrolet | R2500 Suburban | ||
| 1988 | Chevrolet | R30 | ||
| 1989 - 1990 | Chevrolet | R3500 | ||
| 1990 | Chevrolet | V1500 Suburban | ||
| 1988 | Chevrolet | V20 Suburban | ||
| 1989 - 1990 | Chevrolet | V2500 Suburban | ||
| 1988 | Chevrolet | V30 | ||
| 1989 - 1990 | Chevrolet | V3500 | ||
| 1988 - 1990 | GMC | C1500 | ||
| 1988 - 1990 | GMC | C2500 | ||
| 1988 - 1990 | GMC | C3500 | ||
| 1988 - 1990 | GMC | G1500 | ||
| 1988 - 1990 | GMC | G2500 | ||
| 1988 | GMC | G3500 | Rally | |
| 1988 | GMC | G3500 | Rally STX | |
| 1988 | GMC | G3500 | Vandura | |
| 1988 | GMC | G3500 | Rally Custom | |
| 1988 | GMC | G3500 | Magnavan | |
| 1988 | GMC | G3500 | Rally Camper Special | |
| 1988 | GMC | G3500 | Vandura Special | |
| 1989 - 1990 | GMC | G3500 | ||
| 1988 - 1990 | GMC | Jimmy | ||
| 1988 - 1990 | GMC | K1500 | ||
| 1988 - 1990 | GMC | K2500 | ||
| 1988 - 1990 | GMC | K3500 | ||
| 1988 - 1989 | GMC | P2500 | ||
| 1988 - 1990 | GMC | P3500 | ||
| 1990 | GMC | R1500 Suburban | ||
| 1988 - 1989 | GMC | R2500 | ||
| 1988 - 1990 | GMC | R2500 Suburban | ||
| 1988 - 1990 | GMC | R3500 | ||
| 1990 | GMC | V1500 Suburban | ||
| 1988 - 1990 | GMC | V2500 Suburban | ||
| 1988 - 1990 | GMC | V3500 | ||
| 1988 - 1990 | Cadillac | Brougham | ||
| 1988 - 1990 | Chevrolet | Blazer | ||
| 1990 | Chevrolet | C1500 | Cheyenne | |
| 1990 | Chevrolet | C1500 | Scottsdale | |
| 1990 | Chevrolet | C1500 | Silverado | |
| 1990 | Chevrolet | C1500 | 454 SS | |
| 1990 | Chevrolet | C1500 | WT | |
| 1988 - 1989 | Chevrolet | C1500 | ||
| 1988 - 1990 | Chevrolet | C2500 | ||
| 1988 - 1990 | Chevrolet | C3500 | ||
| 1988 - 1990 | Chevrolet | G10 | ||
| 1988 - 1990 | Chevrolet | G20 | ||
| 1988 - 1990 | Chevrolet | G30 | ||
| 1988 - 1990 | Chevrolet | K1500 | ||
| 1988 - 1990 | Chevrolet | K2500 | ||
| 1988 - 1990 | Chevrolet | K3500 | ||
| 1988 - 1989 | Chevrolet | P20 | ||
| 1988 - 1990 | Chevrolet | P30 | ||
| 1990 | Chevrolet | R1500 Suburban | ||
| 1988 | Chevrolet | R20 | Cheyenne |
Specs:
| Automotive Item Grade | High Performance |
|---|---|
| Brand | B&M |
| California Proposition 65 Chemical Name | Cadmium and cadmium compounds |
| California Proposition 65 Required | Yes |
| Emission Code | 5 |
| Gasket Included | Yes |
| Instructions Included | Yes |
| Product Type | Automatic Transmission Valve Body Kit |
| Warning | California Proposition 65 |
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
4.7 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 1
Super wide
Size: 13 Little Kid, Color: Taupe
They are oddly very wide. Great for kids with wide chunky feet but for us it was not cute
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 2
Nice but runs small
Size: 7 Big Kid, Color: Navy
The sandals are nice and not to hard or flimsy but they are cut very small.
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Reviewed in the United States on April 22, 2026
★★★★★ 4
Solid Kids Sandals, Overpriced Like Most Kids Shoes 🌞
Size: 11 Little Kid, Color: Brown, Size: 11 Little Kid, Color: Brown
My son hasn’t worn these yet since it’s December in Indiana and sandals + snow obviously don’t mix. 😂 So this review is based on first impressions rather than long term wear.
That said, these seem wider than a lot of typical kids’ sandals, which I REALLY appreciate since we tend to have wider feet in our family. #hobbitfeet
The quality feels pretty decent overall. They’re described as lightweight, and while they’re not insanely lightweight, they do have enough weight to feel semi-sturdy and not flimsy or cheap. I like the style and color, and I think they’ll work well for my son once warmer weather hits.
My main complaint is the price. At just under $24 at the time of this review, it feels a little high for kids’ sandals and for what these are. I really feel like $20 MAX would make more sense. Kids shoes are almost always priced like adult shoes, even though they clearly use less material, and that’s hard for me to understand and wrap my mind around. Overall, these seem solid for daily wear, I just wish the price was a bit more reasonable and affordable.
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Reviewed in the United States on December 31, 2025
★★★★★ 5
Great basic and timeless design
Size: 12 Little Kid, Color: Brown
These sandals are a great find! They’re super easy to get on and off thanks to the Velcro straps, which is a huge win for little ones learning to be more independent. The fit is adjustable and secure, so they stay in place well during all kinds of play.
The cork-style footbed is comfortable and gives good support, and the overall design feels sturdy enough to handle everyday wear. They’re lightweight but still durable, and have held up really well so far.
They also have a classic, versatile look that goes with just about everything, perfect for summer outfits. Overall, a reliable, comfortable sandal that’s great for active kids. Would definitely buy again!
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Great option for boys or girls
Size: 13 Little Kid, Color: Black, Size: 13 Little Kid, Color: Black
This is really more of a unisex option for a sandal. I have sandals that look like this, and both of my children have worn this style. I ordered these for my daughter, with the plan to pass them down to my son if they're not too worn when she outgrows them. The style is very minimalistic, so it goes with lots of outfits. All the straps are easily adjustable, so you can get a good fit. I would say the length is true to size, but the width is maybe a bit wide. Nevertheless, the adjustable straps really help them fit well. They feel really sturdy and I appreciate that the sole has cushion to it. My daughter has worn these every day since I got them out of the closet and they're holding up well.
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Reviewed in the United States on February 19, 2026
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