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SunTour Brakes

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Suntour brakes on this page: Sprint brake calipers | GPX Aero Brakeset | SE XCR rear cantilever calipers | SE XC Pro rear cantilever calipers | SE XC Pro cantilever caliper brake spring | XC Pro 1" Headlocker Cable Stop | XC Power Cam (Roller-Cam) arms with pads | XC Power Cam (Roller-Cam) brake plates

Suntour could trace its origins to 1912, when the then-named Maeda Iron Works began making bicycle sprockets and then freewheels.

Suntour's business really took off with its introduction of the slant parallelogram rear derailleur in 1964. This innovation, upon which all modern derailleurs are based, allowed the derailleur to maintain a constant distance from the sprockets and vastly improved shifting.

Suntour thrived and expanded, eventually producing complete groups, all well-designed and beautifully made. But upon the expiration of Suntour's slant-parallelogram derailleur patent, arch-competitor Shimano, adopting this design, became a relentless and dominating force in bicycle components, crushing the weaker Suntour company.

In 1988, the now-struggling Suntour company was purchased by the a Taiwan firm and by 1993, once-dominant Suntour owned only five percent of the U.S. market.

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SunTour Sprint Brake Calipers, 39mm - 49mm with Allen Center Bolt. Used, $80/set.

• These calipers have been completely overhauled. See the last pictures of these calipers.
• These calipers have centerbolt bearings.
• Produced 1985 - 1987
• SunTour model name: CB-7600

Front view of the pair of calipers

The front caliper

Side view of the front caliper.

The other side of the front caliper.

The front caliper from above.

Back of the front caliper

The rear caliper

Side view of the rear caliper

The other side of the rear caliper

The rear caliper from above

Back of the rear caliper

Here's one of the calipers disassembled during the overhaul process. You can see the caliper's bearings.

Close-up of some of the caliper parts, including one of the bearings.

Here's a before overhauling (right) and after overhauling photo.

And here's a before and after of the backs of the calipers.

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SunTour GPX Aero Brakeset. New, $300.00/set

Part# 81099

• This brake set is different! The forged aluminum calipers have internal springs. The return spring is not visible, making these about the cleanest looking brakes ever made. To our knowledge, only the SunTour Superbe Pro calipers from this same era have this feature.
• Produced in the late 1980s

New in the box. Levers are under the calipers.

The grey finish will go with any bike.

The calipers

The calipers from the back. Not a spring in sight.

Side view

Close-up of a caliper

Of course, levers and cables are included.

Close-up of the levers

Side view of the levers

And the levers turned over to show thier other sides

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SunTour SE XCR rear calipers. New,$120.00/set

Part# 81120

One eBay seller described these remarkable calipers thus: "The self-energizing element consists of an internal helix or cam in each arm which moves brakes pads inwards i.e. towards and rim (as you would expect) and also forwards in the rotational direction the wheel. This forward motion increases braking power 60-70% for much less effort than a traditional cantilever brakes require."

Important note: These calipers will work ONLY as rear calipers. They will not work as front calipers.

The set of self-energizing rear calipers.

The calipers turned over.

The calipers turned over.

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SunTour SE XC Pro rear cantilever brake calipers. New, $100.00/set

Part# 81120

These cantilever calipers are called "self energizing". The very act of braking creates ever greater pad force against the rim. To quote SunTour's (which licensed Pedersen's design) explanation of the design:

"Designed to enhance the rider's stopping power without expending more energy at the brake lever. ...Self Energizing brakes use the directional force of the rim to increase braking energy. As the [rear] pads contact the rim they are pulled forward toward the seat stay; the brake's internal helical mechanism drives the pads on to the rim with greater force."

Important: Pedersen calipers are front/rear specific. That is, there is a front pair and a rear pair. Care should be given to mounting them

Since SunTour never made a front wheel version, all Suntour SE XC Pro rear brake cantilever calipers go on the rear.

Still new, in the box.

A close-up of the calipers

Note the calipers are Pedersen Self-energizing stoppers. These must be mounted as rear brake calipers.

The backs of the calipers

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XE SE Pro Brake Spring. New, $5.00/each.

We have eight in stock

 

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SunTour XC Pro 1" Headlocker Cable Stop. Used, $50.00

• This cable stop/headset lock was made for 1" steering tubes to work with SunTour XC Pro cantilever brakes. But this beautifully made piece of cycling art will work with nearly any cantilever or centerpull brake.

Simple, beautifully made.

From another angle

From the top

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SunTour XC Power Cam (Roller-Cam) arms with pads. New, $80.00/set, as pictured.

New brake arms

The backs of the arms.

Sides of the arms.

The other sides of the arms.

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SunTour XC Power Cam (Roller-Cam) brake plates. Used, $30.00 for pair.

In the picture below, the cam on the left has modified parts on it.

The fronts of the plates

The backs of the plates

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