Post Mount Klamper
Mounts directly to post mount frames and forks, and to I.S. mounts with a Paul adapter. The original Klamper.
- Weight
- 211g
- Mount
- Post mount
- Pads
- Kool Stop KS-D296S
- Pull
- Short · Long · Campagnolo
01
Brand
PaulChico, California · Since 1989
Paul Component Engineering is a bicycle parts maker that engineer Paul Price started in 1989 in Chico, a small city in Northern California. After a year and a half as an engineer in San Francisco, he quit, moved to Chico and bought a run-down house, chosen above all for a garage big enough for his machines.
His first machines were a mill and a lathe, and the only employee was Paul himself. The company began when an Austrian businessman saw a prototype of his first product, a seatpost quick release, and placed an order. Today, on the site of an old Texaco depot on the edge of Chico, every part is machined in-house on CNC machines and old hand-operated tools.

The Hard Way
At Paul, raw aluminum stock is cut to rough size, machined on CNC mills, tumbled to finish and packed into a box. When The Radavist visited in 2015, the roughly 2,000 square foot shop was turning out about 200 parts a day, while a prototype machine in the corner milled parts nobody had seen yet.
New parts are tested by riding them in Chico's Bidwell Park. Some of the gnarliest mountain bike trails in the country are a short ride from the shop, and many of the crew ride to work. A day in Chico ends with a group ride on the trails and a dunk in the river.

Every part starts from a clean slate. The Klamper took three years to develop, and the caliper body alone went through countless drawing revisions and around 20 prototypes.

6061 and 2024 aluminum is machined and finished in-house. Every scrap of aluminum is forged in the USA, and every part is made in the USA.

The test lab is the trail near the shop. Only parts that Paul and the crew have ridden and refined go on to production.

Sealed cartridge bearings, replaceable pivots and published exploded drawings. With small parts sold separately, these are parts you service and keep for life.
Anodized in ChicoStandard finishes are black, purple and silver anodizing, plus polished. Other colours are limited runs that vary by product and season


Founder · Paul Price
“Pursuing perfection is what has always mattered. So by default, a traditional, predictable life never did.”
In junior high, Paul was already making skateboards from oak in his parents' garage. Raised by an artist and an engineer, always taking things apart, he came to Chico in 1988 and went to work at Mountain Goat, the shop of legendary Chico framebuilder Jeff Lindsay. His job was grinding fillet-brazed joints, but as Lindsay remembers it, what Paul really wanted to make even then was quick releases.
Even now that the company has grown, Paul stays late in the small personal shop next to the production floor, machining prototypes. It is filled with old manual machines such as a WWII-era shaper and Kearney & Trecker mills, and from the ceiling hang the bikes he built each time a new hub, brake or wheel standard came along.
Each year Paul has hosted Paul Camp, inviting journalists and framebuilders to Chico to tour the shop and ride the trails together. Rather than a flashy trade show booth, he chose to show the place where the parts are made and the trails where they are tested.
Paul Component Engineering, StoryPaul Component Engineering
The Range
From brakes to hubs, every part machined in the same shop, the same way.
Cable-actuated ball-and-ramp disc brake. Post mount and flat mount.
Wide cantilever in the spirit of the Mafac Tandem, with generous mud clearance.
Cantilever with upswept arms for a slim profile that stays clear of panniers and heels.
The Mafac centerpull, machined anew. Room for wide tires and full fenders.
A lighter, stiffer Racer with shorter arms.
Direct-pull brake with short arms matched to road levers. No cable hanger needed.
Linear-pull brake with oversized sealed pivots and square-wire springs.
Canti Lever, Love Lever, Duplex, Cross, Reverse and E-Lever. Six levers to match every pull.
Box-section stem machined from 2024 aerospace aluminum. Stainless Torx bolts.
Two-bolt seatposts that set the angle on spherical washers. 26mm and zero setback.
The Word, descended from the first single speed MTB hub of 1996, and its matching front hub.
Square taper crank machined from 2024 aluminum. 3-bolt direct mount chainring.
02
Disc Brake
KlamperPost mount · Flat mount
The Klamper is a mechanical disc brake Paul designed from a clean slate. The goal was a brake that is reliable with just a cable and no fluid, easy to adjust and serviceable on the road. After three years of development the first run of 300 was made in Chico in 2015, and today it is Paul's signature part on gravel and touring bikes.
It uses the proven ball-and-ramp principle. Paul added bigger balls and hardened steel contact faces for smoother action and more pad travel. A light start to the lever stroke that firms up and bites hard at the end, with power that is easy to modulate, is the Klamper's character.
Larger balls give smoother action and more pad travel. Where the balls meet the ramps, the steel is hardened.
Three hardened steel pins locate the pad actuator, and a flat needle roller thrust bearing takes the load instead of the usual plastic washer.
Fang-shaped reinforcements on the inner backing plate and extra material only where the outer body needs it make for a stiffer caliper.
The pad adjusters click into detents located by spring ball plungers. Set the pad gap by hand without tools, and it stays put.
Mounts directly to post mount frames and forks, and to I.S. mounts with a Paul adapter. The original Klamper.
The flat mount version for today's gravel and road frames. Mounting bolt length depends on your frame and adapter, so it is chosen separately.
Short pull for Shimano and SRAM road levers and the Canti Lever, long pull for the Love Lever and Cane Creek Drop V, and a super-short arm for Campagnolo. Swap just the arm to move to different levers.
Klamper · With Paul leversBlack, silver, purple, polished and more





Bed-in
New pads need a few short rides to bed in. Paul says the Klamper really starts to bite around the third ride. Kool Stop sintered metal pads (KS-D296S) come standard, and it takes SRAM and Avid MTB pattern pads.
Paul does not make rotors. The Klamper works well with Shimano Ice-Tech, SRAM, Avid and most others, though floating rotors with large buttons can rub the caliper. Rubi Workshop will put together the right rotor, adapter and lever combination for you.
03
Rim Brakes
Cantilever · Centerpull · VNeo-Retro, Racer, MiniMoto
Since the Stoplight Brakes made in Paul's first Chico machine shop in 1992, brakes have always been what Paul makes most. Even in the disc brake era, Paul has not let go of cantilevers and centerpulls, because steel touring bikes, classic road bikes and 650B randonneurs still look and work best with them.
The Neo-Retro and Racer rework the classic shapes of France's Mafac with modern materials and adjustability. T-section arms resist flex under load, while sealed pivots and adjustable springs keep them smooth and centred for years. All come with salmon Kool Stop Thinline pads.
A wide cantilever that carries on the Mafac Tandem geometry. Long arms give strong leverage and generous mud clearance for cyclocross and touring.
The same construction as the Neo-Retro with upswept arms for a much slimmer profile. Ideal for bikes with large panniers or tight heel and calf clearance.
The Mafac centerpull, re-machined on CNC. Widely spaced pivots leave room for big tires and full fenders together.
A lighter, sharper Racer with short, stiff arms. A 32mm tire and 45mm fender fit between the arms.
A direct-pull brake with arms shortened to match the leverage of ordinary road levers. Simple to install with no cable hanger, and it has a quick release.
Oversized sealed pivots and independently adjustable square-wire springs. Long arms let the pads sit higher, so it is also used to fit 650B or 700C wheels to a 26 inch frame.
Cantilever · CenterpullSold per wheel




V Brake · ColoursAnodized black, purple or silver, polished and more





Racer · Braze-on
The braze-on Racer mounts directly to centerpull bosses that the framebuilder brazes on in a specific position. Boss placement sets the reach for 700C, 650B or 26 inch wheels, and with no bridge it is stiffer and cleaner.
Stock frames use the center mount version, which bolts through the single brake hole above the tire. It suits long-reach classic frames and randonneurs with fenders. In a Rubi Workshop custom build, we decide boss placement and brakes together from the frame stage.

MiniMoto
Ordinary V brakes are designed for long-pull flat bar levers and do not work with road levers. The MiniMoto shortens the arms to match road lever leverage. Unlike a cantilever, there is no separate hanger or straddle wire, and the profile is narrow.
Springs adjust independently left and right, and the pivots run on sealed stainless bushings. There is a quick release for wheel removal, and it clears 44 to 45mm tires without fenders. It is not compatible with Campagnolo levers.
04
Brake Levers
Canti · Love · Duplex · CrossShort pull, long pull, both
A lever and brake only stop properly when the amount of cable they pull, the pull, matches. Cantilevers, centerpulls, the MiniMoto and the short-pull Klamper take short-pull levers; V brakes, the Motolite and the long-pull Klamper take long-pull levers.
Every Paul lever is machined from 6061 aluminum in Chico. Sealed cartridge bearings or stainless pivots make them solid with no play, and large barrel adjusters let you set cable tension by hand.

Flat bar lever for cantilever, centerpull, sidepull, mini V and short-pull disc brakes. Dual sealed bearing pivot, standard or short reach.

Lever for V brakes and long-pull disc brakes. Two-finger Compact or three-finger 2.5, with a 5mm reach set screw.

One lever pulls two cables. It started in bike polo, where riders brake while swinging a mallet, and it fits either hand.

Inline lever for the tops of a drop bar. Move the pivot hole to suit short-pull or long-pull brakes.

A lever that plugs into the end of the bar, pointing back. Ambidextrous, with a movable pivot for short or long pull.

A small single-finger short-pull lever. With less leverage, it is recommended as a secondary brake alongside a fixed gear or coaster brake.
05
Stem · Seatpost
Boxcar · Tall and HandsomeMachined from 2024 aluminum
The Boxcar stem is machined from 2024 aerospace aluminum. As the name suggests, its rounded box section resists twisting, and the bolts are stainless T25 Torx. Torx was chosen because it is harder to overtighten than a hex key, which protects carbon bars and steerers.
The Tall and Handsome and Tall and Elegant seatposts hold the saddle with two bolts and spherical stainless washers. One screw fine-tunes the angle, and loosening both moves the saddle fore and aft. Tilt range is about 15°, and oval carbon rails are welcome.

35 to 110mm, at 0°, 7°, 12° and 15°. 31.8 and 35.0 handlebar clamps.

26mm setback. Ideal for riders who need the saddle further back, such as those on short-railed Brooks saddles.

Inline post with zero setback. The same two-bolt head sets the angle on brass trunnions.

A collar that carries on Paul's very first product, the seatpost quick release. 6061 and 7075 aluminum with stainless steel.
06
Hubs · Drivetrain
Word · FHub · CranksSingle speed since 1996
The Word is a rear hub descended from the first single speed MTB hub Paul made in 1996. Back when there were almost no hubs for people riding mountains without gears, Paul made one with wide flange spacing that allows a dishless wheel build.
The hub body is 6061 and the axle 7075 aluminum. The sealed cartridge bearings are user-adjustable with an adjuster ring, and the Disk Word swaps between quick release, bolt-on and 12mm thru-axle. A hub to ride, service and rebuild for the long haul.

135mm single speed hub with freewheel threads (1.37 x 24tpi). Cinch-bolt adjuster ring.

6-bolt disc mount. Quick release and bolt-on at 135mm, 12mm thru-axle at 142mm.

Light front hub with precisely machined bearing bores and sealed bearings. Quick release or bolt-on.

Track hub with windowed 65mm flanges. Rear in flip-flop, fixed/free or single-sided fixed.

Crank arms milled in the USA from 2024 aluminum. The JIS square taper bottom bracket lets you choose Q-factor and chainstay clearance, with a 3-bolt SRAM direct mount chainring. Not for fixed gear use.

Mounts that turn bar-end or downtube shifters into thumb shifters, handy when converting a drop bar bike to flat bars. For Shimano, SRAM and microSHIFT.

A tensioner that mounts in place of a rear derailleur so you can run single speed on a vertical dropout frame. Two pulleys handle up to 20 teeth of front chainring difference.
Hubs · DetailBlack, silver, polished and more




07
Fit Guide
When choosing a Paul brake, first check your frame's brake mount (post or flat mount, canti bosses, centerpull bosses) and the cable pull of the levers you will use. Figures are from Paul Component's official technical information.
BrakesWeights are per wheel
| Model | Type | Mount | Cable pull | Paul levers | Other levers | Weight | Notes |
|---|---|---|---|---|---|---|---|
| Klamper · Short Pull | Mechanical disc | Post · Flat mount | Short pull | Canti Lever, Cross Lever, Reverse Lever | Shimano and SRAM road levers and brifters | 211g | Rotor and adapter sold separately |
| Klamper · Long Pull | Mechanical disc | Post · Flat mount | Long pull | Love Lever, Cross Lever, Reverse Lever | Long-pull levers such as Cane Creek Drop V | 211g | Rotor and adapter sold separately |
| Klamper · Campagnolo | Mechanical disc | Post · Flat mount | Campagnolo | - | Campagnolo Ergopower | 211g | Campagnolo-only arm |
| Neo-Retro | Cantilever | Canti bosses | Short pull | Canti Lever, Cross Lever | Short-pull drop bar levers | 100g | Wide profile, generous mud clearance |
| Touring Cantilever | Cantilever | Canti bosses | Short pull | Canti Lever, Cross Lever | Short-pull drop bar levers | 123g | Narrow profile, clears panniers |
| Racer | Centerpull | Braze-on · Center mount | Short pull | Canti Lever, Cross Lever | Short-pull drop bar levers | 120g / 157g | Reach 57 to 72mm |
| Racer Medium | Centerpull | Braze-on · Center mount | Short pull | Canti Lever, Cross Lever | Short-pull drop bar levers | 113g / 154g | Reach 47 to 57mm, 32mm tire |
| MiniMoto | Short-pull V brake | Canti bosses | Short pull | Canti Lever, Cross Lever | Shimano and SRAM short-pull levers (not Campagnolo) | 149g | Tires to about 44mm |
| Motolite | Linear-pull V brake | Canti bosses | Long pull | Love Lever, Cross Lever | V brake flat bar levers | 137g | 650B or 700C wheels on 26 inch frames |
LeversClamp is handlebar diameter
| Model | Cable pull | Clamp | Weight | Style | Matching brakes |
|---|---|---|---|---|---|
| Canti Lever | Short pull | 22.2mm | 134g (pair) | Flat bar, standard or short reach | Cantilever, centerpull, sidepull, MiniMoto, short-pull Klamper |
| Love Lever Compact | Long pull | 22.2mm | 125g | Two finger | Motolite, V brakes, long-pull Klamper |
| Love Lever 2.5 | Long pull | 22.2mm | 137g | Three finger | Motolite, V brakes, long-pull Klamper |
| Duplex Lever | Short · Long pull | 22.2mm | 94g | Two cables from one lever | Front and rear brakes with one hand |
| Cross Lever | Short · Long pull (selectable pivot) | 31.8mm | 140g | Inline lever for drop bar tops | With drop bar levers or on its own |
| Reverse Lever | Short · Long pull (selectable pivot) | Bar inner diameter 19 to 25mm | 80g | Bar end, ambidextrous | Braking from the bar end, such as on bullhorns |
| E-Lever | Short pull | 22.2 / 23.8mm | 56g | One finger | Secondary brake (with a fixed gear or coaster brake) |
Paul brakes are sold per wheel; disc rotors, adapters and levers are sold separately. Braze-on centerpulls need bosses in the right position on the frame, and reach depends on wheel size and boss placement. Rubi Workshop will check your frame and levers and match brakes, levers and rotors for you.
08
Story
1989 ~ 2026Chico, California
From a single seatpost quick release to a fundraiser bike built with framebuilders for the 2026 Made Bike Show. While many parts makers moved production overseas, Paul has spent 37 years in Chico designing, machining and riding everything himself.


Paul quits his engineering job in San Francisco and moves to Chico, where he grinds fillets at Jeff Lindsay's Mountain Goat.
The first product, a seatpost quick release, is made in the garage. A first order from an Austrian businessman launches the company. Wheel quick releases follow.
The first machine shop opens in Chico. The same year the Stoplight Brakes arrive, and brakes become Paul's signature part.
Paul makes his first hub for single speed mountain bikes, the ancestor of today's Word and Disk Word.
After three years of development, the first 300 Klampers are produced. The Radavist spends an afternoon at the Chico shop.
Paul Camp is held with eleven bikes built by eleven framebuilders around a monster cross and mountain bike theme.
Thirty years. A limited green anodized run and a 30th anniversary box set, and seatposts in 30.9 and 31.6mm.
A fundraiser bike on a Black Cat Bicycles frame, built up with Paul parts, debuts at the Made Bike Show in Portland. All proceeds go to the Oakridge Trails Alliance.
From The Radavist


09 · Showroom
Machined surfaces and anodized colours are best judged in person. See Paul parts up close at Rubi Workshop, and we will help you choose the brake and lever combination that suits your frame and riding. Custom build consultations are also available.
For Dealers
Rubi Company is the official distributor of Paul Component Engineering in Korea. For dealer accounts and terms, please contact Rubi Supply, Rubi Company's B2B channel.