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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
B&M Shift Improver Kit - GM TH2004R Transmissions - 35265Overview: B&M Shift Improver Kit for 1981 1990 Chevrolet, Buick, Olds, Pontiac and GMC TH 200 4R transmissions, recalibrates your automatic transmission for optimum performance and extended life! Select the mode that best suits your application Provides crisp shifts on any stock automatic transmission Eliminates shift overlap and excess wear on clutches and bands due to slippage The B&M Shift Improver Kit the easiest way to get the stout performance
Overview:
B&M® Shift Improver Kit™ for 1981-1990 Chevrolet, Buick, Olds, Pontiac and GMC TH-200-4R transmissions, recalibrates your automatic transmission for optimum performance and extended life! Select the mode that best suits your application Provides crisp shifts on any stock automatic transmission Eliminates shift overlap and excess wear on clutches and bands due to slippage The B&M Shift Improver Kit the easiest way to get the stout performance you've always wanted out of your automatic transmission - and you get two modes of performance to select from: Heavy Duty, or Street/Strip. It's our least expensive and simplest to install kit. All you need are some hand tools! In the space of an afternoon, you can turn your transmission into a B&M-tuned unit! Ask the thousands of satisfied customers that have installed one in their transmissions! STAGE 1. HEAVY DUTY Firm positive shifts without loss of driver comfort for improved performance in all street vehicles. Recommended for regular passenger vehicles. STAGE 2. STREET/STRIP Provides positive shifts for high performance street use or for competitive events. This level is for the enthusiast who wants the hardest, quickest possible.
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 |
|---|---|---|---|---|
| 1985 - 1989 | Buick | Electra | Estate Wagon | |
| 1981 - 1984 | Buick | Electra | ||
| 1981 - 1984 | Buick | LeSabre | ||
| 1985 - 1990 | Buick | LeSabre | Estate Wagon | |
| 1985 | Buick | LeSabre | Limited | |
| 1985 | Buick | LeSabre | Custom | |
| 1985 | Buick | LeSabre | Collector's Edition | |
| 1981 - 1983 | Buick | Estate Wagon | ||
| 1982 - 1987 | Buick | Regal | ||
| 1985 | Cadillac | Commercial Chassis | ||
| 1981 - 1984 | Cadillac | DeVille | ||
| 1981 - 1986 | Cadillac | Fleetwood | Brougham | |
| 1981 - 1986 | Cadillac | Fleetwood | Brougham d'Elegance | |
| 1984 | Cadillac | Fleetwood | ||
| 1987 - 1990 | Cadillac | Brougham | ||
| 1981 - 1990 | Chevrolet | Caprice | ||
| 1985 | Chevrolet | Caprice | Classic | |
| 1982 - 1987 | Chevrolet | El Camino | ||
| 1981 - 1985 | Chevrolet | Impala | ||
| 1982 - 1983 | Chevrolet | Malibu | ||
| 1982 - 1988 | Chevrolet | Monte Carlo | ||
| 1984 - 1987 | GMC | Caballero | ||
| 1981 - 1984 | Oldsmobile | 98 | ||
| 1985 - 1987 | Oldsmobile | Cutlass Salon | ||
| 1982 - 1984 | Oldsmobile | Cutlass Calais | ||
| 1982 - 1983 | Oldsmobile | Cutlass Cruiser | ||
| 1982 - 1987 | Oldsmobile | Cutlass Supreme | ||
| 1988 | Oldsmobile | Cutlass Supreme | Classic | |
| 1988 | Oldsmobile | Cutlass Supreme | Classic Brougham | |
| 1981 - 1985 | Oldsmobile | Delta 88 | ||
| 1981 - 1990 | Oldsmobile | Custom Cruiser | ||
| 1982 - 1985 | Oldsmobile | Toronado | ||
| 1981 - 1986 | Pontiac | Bonneville | ||
| 1981 | Pontiac | Catalina | ||
| 1989 | Pontiac | Firebird | Trans Am | |
| 1989 | Pontiac | Firebird | Trans Am GTA SE | |
| 1983 - 1987 | Pontiac | Grand Prix | ||
| 1982 - 1986 | Pontiac | Parisienne | ||
| 1987 - 1989 | Pontiac | Safari | ||
| 1985 - 1987 | Oldsmobile | Cutlass |
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
4.9 ★★★★★
Based on 908 reviews
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Product Reviews
★★★★★ 5
Recommend
Flavor Name: REAL Bacon, Size: Small
This chew toy is great for aggressive chewers—it’s very durable and holds up much longer than most other toys we’ve tried. The ring shape makes it easy for dogs to grip and carry, and my dog was immediately interested in it, likely because of the real bacon flavor. It’s also a nice bonus that it’s made in the USA and doesn’t have a strong smell for humans.
That said, it is very hard, so I’d recommend keeping an eye on your dog while they’re using it, especially if they’re an intense chewer. Over time, it does wear down and needs to be replaced once the edges get rough.
Overall: a long-lasting, high-quality chew that keeps dogs occupied—just be mindful of the hardness and monitor for wear.
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Reviewed in the United States on March 25, 2026
★★★★★ 5
Long lasting chew toy!
Flavor Name: REAL Bacon, Size: Large, Flavor Name: REAL Bacon, Size: Large
All I can say is wow! I have a Basset Hound mix who will be in the puppy stage for another year, and as we all know, that means dealing with teething issues. Seeing the photo of this product when it was new makes it obvious what he’s done to it. He’s still at it, chewing like mad. Made for medium to large dogs, he happily totes it around everywhere, and I’m always picking it up so I don’t trip over it.
The inner cup can hold peanut butter as a special treat for your pet, and I give him some when he’s feeling a bit bored. It doesn’t last long, but he’ll keep chewing on it for a while afterward. For me, the value is worth the price if it keeps his teeth off my furniture—pet owners know exactly what I mean.
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Reviewed in the United States on January 30, 2026
★★★★★ 4
Worth full product
Flavor Name: REAL Bacon, Size: Large
My dog enjoys it and very durable for my Pitbull!
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Reviewed in the United States on April 17, 2026
★★★★★ 5
All 3 Dogs Want The Benebone Ring Now
Flavor Name: REAL Bacon, Size: Large
Rescued an Old English Sheepdog and after about 2 weeks, he started chewing things in the house. We knew he enjoyed chewing sticks in the backyard, but chewing things in the house was a no go. Purchased this Benebone Ring (bacon) hoping it would help to curb some of the issues we were having. I am happy to report that so far, after 3-4 weeks of him having the Benebone Ring, he has not chewed a single thing inside the house. He loves this ring and carries it in and out during the day so that he has it with him. The only problem we ran into was our other 2 dogs ALSO wanted the Benebone Ring. While they are not big chewers, suddenly this toy became the must have item in the house. So of course, we had to get more.
Highly recommend this chew toy as it is not only durable, it appears to be highly desirable. Keep in mind however that this toy is heavy. So when your dog decides to drop it on your hardwood floors, you WILL hear it in every room in the house!!
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Reviewed in the United States on March 18, 2026
★★★★★ 5
My babies love their Benebones!
Flavor Name: REAL Bacon, Size: Large, Flavor Name: REAL Bacon, Size: Large
My one-year old pittie is 60lbs and has severe allergies to EVERYTHING, she's on medicated food and all the crazy things, and so I was trying to find something that wouldn't mess up her regimen by her ingesting it. This is PERFECT. She loves her medium sized Benebone! She carries it everywhere haha. I have three other big dogs, and got the largest one for my 110lb German Shepherd and she also loves it. I keep an eye on the edges and sand them down if I find anything sharp.
These things are TOUGH. My pitbull can eat a massive bully stick in less than ten minutes, and she's barely made a dent in this thing! My GSD is a little more delicate and likes to savor and enjoy her toys, so hers isn't progressing as fast. She eats Yak Chews in around 30 minutes (and those things are like concrete!)
I think these will easily last a month, possibly more, and for the price you can't beat it. The value is insane. I spend maybe 200$ a month on rawhide alternatives and bully sticks and yak chews for them, and these 14$ things last infinitely longer. BTW these things hurt like a mother trucker when you step on them, so keep an eye on where they are haha they're big and heavy!
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Reviewed in the United States on November 9, 2025
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