SKU: 12381926624

88-98 SILVERADO OBS TBM Modular Bore Billet Master Cylinder Conversion Kit (Choose Bore Size)

Sale price$214.65 Regular price$238.50
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Description

88-98 SILVERADO OBS TBM Modular Bore Billet Master Cylinder Conversion Kit (Choose Bore Size)88 98 SILVERADO OBS TBM Modular Bore Billet Master Cylinder Conversion Kit (Choose Bore Size) Our Manual Brake Master cylinder kit utilizes a billet firewall mounting plate CNC'd from 6061 Aluminum. This plate is designed to utilize our TBM Modular Billet Tandem Master Cylinder. This requires you to drill your brake pedal for the master cylinder pushrod Kit includes all hardware necessary. Years of development went into this all new TBM Billet Modular

88-98 SILVERADO OBS TBM Modular Bore Billet Master Cylinder Conversion Kit (Choose Bore Size)

Our Manual Brake Master cylinder kit utilizes a billet firewall mounting plate CNC'd from 6061 Aluminum. This plate is designed to utilize our TBM Modular Billet Tandem Master Cylinder. This requires you to drill your brake pedal for the master cylinder pushrod Kit includes all hardware necessary.

Years of development went into this all new TBM Billet Modular Master Cylinder which answers the needs of racers and hot rodders alike. For years our brakes have rapidly developed to create world class braking systems. However, the control system of a car's braking system is the master cylinder. While most brake master cylinders are cast spinoffs of old technology that lack options in internal and physical outside sizing, have leaking issues, and reliability issues. The TBM brake master is a ground up engineered design to remedy those questions and offer new solutions for builders.

Sizing Guideline

15/16" Bore Size: Our TBM Billet 15/16" Master cylinder is only recommended for vehicles running 2 piston front brakes and 4 piston rear brakes at 6:1 Pedal Ratio.

1.032" Bore Size: Our TBM Billet 1.032" Master cylinder is recommended for vehicles running 4 piston front brakes and 4 piston rear brakes at 6:1 Pedal Ratio.

Instructions: Click Here

Features:

  • Master Cylinders held to exact tolerance and precision for out of the box performance
  • Compact Design fits where others don't (an inch or more shorter than standard masters)
  • Modular design allows for adaptability on the top (reservoir) and bottom (outlet plate)
  • Symmetrical Outlet plate gives you the ability to run the outlet fittings on either side of the master cylinder
  • Standard outlet plate offers better line routing than traditional master cylinders with down facing or side facing outlet fittings
  • 3an Female & 1/8" NPT outlet fittings
  • Fully captured pushrod (Zero risk of pulling out)
  • Hard Coated pistons avoid internal wear and debris with extended use that can clog and degrade brake caliper and system performance
  • Front threaded mounting holes offer ability to rigid mount the front of the master cylinder in chassis cars with add on steel plate
  • Oring construction for zero leaks
  • Easily swap from reservoir to remote mount with P/N 41-0004
  • 1lb. lighter than most aftermarket tandem master cylinders
  • Bright Black Anodize finish for ultimate durability
  • EPDM Seals
  • Stainless Hardware
  • Made completely in the USA in Bradenton, FL

Included: 

  • 6:1 Pedal Ratio optimized for manual brakes
  • Billet Manual Master Cylinder Firewall Plate
  • TBM Modular Billet Aluminum Tandem bore Master Cylinder
  • Hardware for Installation
  • Brake Push Rod w/ Heim Joint for attaching to pedal
  • Fittings for Master Cylinder

*Note: Slight modification to existing bolt holes on firewall needed to accommodate brake plate. Additionally, factory pedal assembly needs to be removed and studs going through firewall to hold factory master cylinder need to be removed from pedal assembly by cutting as bolts will be put in place*

This kit improves the brake pedal ratio for use with manual brakes vs. power brakes.  While sharing the original bolt pattern, this requires you to modify the existing hole where the master cylinder goes through the firewall to accommodate the stronger ratio. 

Note: Due to the difference in pedal travel based off of the required manual master cylinder ratio, brake light switch may require modification to work properly based off of pedal position.

Do's and Don'ts for proper master cylinder setup: Must Watch!

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 12381926624

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Kindle Customer
Bozeman, US
★★★★★ 5
Buying another color
Size: 18, Color: Rinse Wash
Love these jeans. Fit true to size. Ankle length and I just over 6 ft tall.
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Reviewed in the United States on March 11, 2026
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Yuna Goto
West Palm Beach, US
★★★★★ 4
Comfortable jeans. Perfect length. Too baggy for my body shape.
Size: 0, Color: Medium Wash, Size: 0, Color: Medium Wash
5’0 - 95lbs I got size 0. They are comfortable, but really baggy. The length sits perfect at my ankles. The quality of the jeans are also nice. Pockets are a good size.
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Reviewed in the United States on April 23, 2026
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Cathy Ann
Battle Creek, US
★★★★★ 3
Too high waisted
Size: 14, Color: Black
I really wanted these jeans to fit because I loved the style and the heavier weight with just a touch of stretch. Size 14 should have fit but was huge. High waist is an understatement; the waist hit between my bellybutton and my boobs. The whole body area - waist, butt, crotch was huge. Sad because I liked the look of the legs...just the right amount of width and the length hitting the top of my Chelsea boots (26" exactly, I measured) plus the wide cuff. I'm not sure if going down a size or two will change how high the waist goes.
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Reviewed in the United States on September 29, 2025
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Alyssa McDiarmid
Phoenix, US
★★★★★ 5
I’m smitten
Size: 18, Color: Black
These are so well made and perfect high-rise to keep my belly tucked away. Have the perfect stretch without making me sausage like. Keep shape all day! Great length and look so cute with all kinds of shoes. Can’t wait for sweater weather!
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Reviewed in the United States on September 22, 2025
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Amazon Customer
Cuba, US
★★★★★ 1
Disappointed
Size: 12, Color: Medium Wash
Jeans were a different style than what the photo shows. They are also a size 12 but run TINY couldnt even get them up my thighs and I’m a true size 10. Run like a size 7.
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Reviewed in the United States on March 13, 2026

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