Seat Post binders & clamps

Campagnolo & Campagnolo replica binders are posted here.

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Campagnolo Quick-release seatpost binder bolt. New, $40.00

Part# 44109

We also have one from Specialized.

Campagnolo part #1240
We have four in stock.
The shaft is 8mm in diameter. Many QR's have smaller shafts.
These were made from the 1960s into the 1980s.
Great for tandem stoker seats.

Campagnolo seat clamp

Given the curved lever, this clamp was probably made in the 1980s.

Campagnolo seat clamp

Let there be no doubt as to who made this.

Specialized quick-release seatpost binder bolt. Used, $40.00

Specialized seat post QR

Here's Specialized's offering

Spcialized seat QR

The lever

Campagnolo 8mm seatpost binder bolt. Lightly used, $70.00/each

We have three in stock.

ampagnolo seat binder bolt

The classic.

Campagnolo seat post binder bolt

Small in size, but big in character.

Campagnolo seat biner

End view.

End view

A good close-up of one of them.

A close-up end view

Tange seat post binder bolt. New, $25.00/each

Part# 44196

Not quite the same as the old Campy bolt, but not nearly the same price either. And it will do the same job quite well.

19mm length measured inside-to-inside when the bolt is closed
It is intended to be a replica of the Campangolo 8mm seat binder bolt
If your seat lug doesn't have a keyway, just a round hole, these binders are just the ticket.
These bolts have a knurled section to help them grip the inside of the seat-lug ear.
We have 47 in stock.

Tange seat post binder bolt

A classic design

Tange seat post binder bolt

The seat post binder bolt turned over

Tangle seat post binder bolt

End-on view. Note that it is made of cro-moly steel.

Campagnolo replica seat binder bolt. $15.00/each

Not quite the same as the old Campy bolt, but not nearly the same price either. And it will do the same job quite well.

This is a 10 x 22mm seat binder bolt
If your seat lug doesn't have a keyway, just a round hole, these binders are just the ticket.
These bolts have a knurled section to help them grip the inside of the seat-lug ear.

Allen seat binder bolt

Allen seat post binder bolt

And from the other side

Fuji quick-release 30.6mm silver seat tube clamp. Used, $10.00

Fuji Seat tube clamp

Top view

Seat tube quick release clamp

From behind

Fuji Seat clamp

And from the top.

Black quick-release 30.6mm seat tube clamp. Used, $10.00

We don't know who made this clamp.

Seat tube clamp

Top view

Black seat tube clamp

Another view

31.8mm De Rosa Seat Tube Clamp. Used, $20.00/each

De Rosa seat tube clamp

Just the finishing touch to complete an awesome Italian superbike.

32mm allen-key seat post clamp. Taken off new bike, $10.00/each

Seat tube clmap

Clean, simple design that will keep that seatpost firmly in place.

Seat tube clamp

Here is the clamp turned around.

Seat tube clamp

And from the top.

31.9mm allen-key seat post clamp. Used, $15.00/each

Seat post clamp

Side view

Seat post clamp

From the other side.

Seat tube clamp

From underneath. You can see the clamp has a lip to sit on top of the seat tube to make a clean installation. 31.9 is stamped on one of the ears, but it's almost impossible to read.

Tranz-X 37.8mm seat tube quick-release collar with seal. Used, $35.00/each

Seat tube collar