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Shop | Components | Brakes | Disc Brakes | Post Mount/I.S. Klamper

Product Videos

Related Products

Related products

  • Canti Lever

    $92.50 – $259.00
    Select options
  • I.S. & Post Mount Disc Adapters

    $32.00 – $44.00
    Select options

Post Mount/I.S. Klamper

Three years of development and we think we nailed it. 100% designed, tested and manufactured in-house. Click on “Short Pull, Long Pull or Campagnolo?” in the Technical Information below if you are unsure of which to order. To determine whether you need an adapter, head over to our adapter page. Brake pads and mounting hardware included.

 

$244.50 – $317.00

Clear

Technical Information

  • Material
    6061 Aluminum, Heat Treated 12L14 Steel
  • Weight
    211g
  • Finish
    Anodized or Polished
  • Anodized Color
    Black, Purple or Silver
  • What is Cable Pull?
    Short Pull, Long Pull or Campagnolo? ↓

    Short Pull: This version is designed to work with road levers, including SRAM, Shimano and combined shifter/brake levers. It also works great with the Canti Lever, our short-pull flat bar brake lever.

    Long Pull: This version is designed to work with long-pull brake levers, such as the kind that work with V or linear-pull brakes. Our Love Levers work especially well with this model. It also works well with long-pull drop bar levers, such as the Cane Creek Drop V.

    Campagnolo: Campy uses a super-short cable pull, so this Klamper uses a super short Campy-only actuator arm.

  • Included Brake Pads
    Kool Stop Avid Elixer SRAM MTB XX Sintered Metal Compound #KS-D296S
  • How to Adjust Video
    https://vimeo.com/250397883
  • Instructions
    Download
  • Exploded Assembly Drawing
    Exploded Assembly Drawing
  • Will it fit my bike?
    Download

  • Print actual size, do not scale to fit page

Product Story

When we set out to build this brake, nearly five years ago, we started with a clean slate. Then we tried all manner of wacky ideas but eventually wound our way back to the tried and true ball bearing in a ramp system. From there we concentrated on the details. We made the balls bigger for smoothness and increased pad travel. We hardened the steel where the balls contact the ramps. We used three hardened steel pins to locate the pad actuator. Instead of a plastic thrust washer we used a flat needle roller thrust bearing.

Then we moved onto the caliper body. This took countless drawing revisions and probably 20 prototypes. We added “fangs” to the inner backing plate for stiffness, and beefed up the outer caliper body where needed.

The pad adjusters went through a similar process. We wanted easy adjustability but staying power. For that we designed detents into the circumference, located with spring ball plungers.

We believe this is the best mechanical caliper ever made for a bicycle. It’s available in Long Pull, Short Pull, and Campagnolo pull. Just change the actuating arms, which are available separately here.

We decided not to make rotors. That’s a manufacturing process we do not do, and they are readily available. Floating rotors with large buttons (like Hope) might rub against the caliper, but we’ve had great results with Shimano Ice-Tech, Sram, Avid, and most other rotor brands. The included pads are Kool Stop sintered metallic.

As always, allow a couple short rides to bed in the pads. Around the 3rd ride, these brakes really start to BITE!

Replacement pads can be found HERE.

Please note that all of our brakes are sold per wheel.

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Should we bring back #FixtureFriday ? Before you c Should we bring back #FixtureFriday ? Before you can make all the parts, you have to make all the fixtures, and these aren’t something you can buy off a shelf! All of our production and assembly fixtures are one-offs made by Paul or Patrick or Jacob in the manual machine shop (although Jacob just made our first ever 3D printed fixtures, but that’s a story for a different Friday 😉). 
  This fixture is for pressing the little sealed cartridge-bearings into our Canti and Love levers. Once mounted in an arbor press, a little magnet holds the bearing until you press-fit it into the lever blade with a pull on the arbor press. In theory these bearings could be replaced down the line, but we haven’t had to do it yet. Thank you for attending our Ted Talk, happy Friday! ✌️
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Boxcar Stems are available in 35 through 110mm len Boxcar Stems are available in 35 through 110mm length, and are machined right here in sunny Chico California to the tightest tolerances, using the highest grade 2024 American-milled aerospace aluminum available. Sure, you might see us goofing off and getting weird at bike events, but when we get back to work in the machine shop, we take our work VERY serious!
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