Seat Clamp
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SPANK BIKES TWEET TWEET SEAT CLAMP AQUA BLUE ANODIZED *NEW* | ![]() |
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US $14.99 | 2d 7h 41m |
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Odyssey Brand new black seat clamp fits gt haro hutch mongoose bmx bikes | ![]() |
1 Bid | US $2.00 | 2d 14h 48m |
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silver seat clamp tuff neck style fits gt haro hutch redline mongoose bmx bikes | ![]() |
0 Bid | US $1.00 | 2d 14h 53m |
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Nice orignal blue Dia Compe MX hinge seat clamp 1980's Japan made Old School BMX | ![]() |
0 Bid | US $149.99 | 2d 21h 56m |
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Nice orignal Dia Compe MX hinge seat clamp 1980's Japan made Old School BMX haro | ![]() |
0 Bid | US $99.99 | 3d 12h 48m |
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BMX Seat guts / clamp - 7/8" - SILVER - NEW! | ![]() |
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US $6.99 | 20d 20h 49m |
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FLATLAND BMX BICYCLE PRIMO 330 PIVOTAL SEAT POST & ODYSSEY MR CLAMPY CLAMP COMBO | ![]() |
3 Bids | US $10.99 | 2d 10h |
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Dia-Compe MX hinged old school BMX seat clamp 25.4mm (1") SILVER ANODIZED | ![]() |
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US $21.99 | 2d 11h 47m |
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XS seat post clamp in excellent condition! Joey Garcia Automatic! | ![]() |
0 Bid | US $7.99 | 5d 2h 45m |
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SEAT POST CLAMP Ø25.4 SUIT 22.2 POST SILVER ALUMINIUM 2 BOLT ALLEN HEAD | ![]() |
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US $9.72 | 15d 5h 37m |
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Crupi Seat Post Clamps 31.8 - White | ![]() |
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US $12.99 | 27d 21h 31m |
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Crupi Seat Post Clamps 25.4 - White | ![]() |
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US $12.99 | 26d 5h 12m |
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SINZ Quick Release Seat Clamp 25.4 - Black | ![]() |
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US $11.99 | 27d 21h 31m |
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GT Zaskar Lightning Seat Post Clamp Collar 32mm | ![]() |
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US $11.99 | 23d 4h 14m |
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Crupi Seat Post Clamps 25.4 - Blue | ![]() |
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US $12.99 | 26d 5h 12m |
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S&M XLT Seat Post Clamp BMX Race Street Dirt Jump Bike Holmes Old Mid School Red | ![]() |
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US $9.97 | 27d 21h 35m |
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SINZ Quick Release Seat Clamp 31.8 - Blue | ![]() |
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US $11.99 | 27d 21h 10m |
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Sunlite Micro Adjust Seat Post with Clamp 27.2 x 350mm Black | ![]() |
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US $27.99 | 10d 5h 42m |
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Tuf Neck style BMX alloy seat clamp 28.6mm 1 1/8" - RED | ![]() |
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US $11.99 | 7d 12h 51m |
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Bicycle seat "guts" clamp 7/8" OLD SCHOOL BMX GOLD | ![]() |
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US $8.99 | 29d 10h 47m |
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Seat Clamp

How do I know what bike seat clamp size to get?
I have a BMX bike and I'm missing the clamp to hold the seat. How do I know what size I need? Does it say it anywhere on the bike?
Try checking the seat post (the metal tube connected to the seat), typically its written on there and that should give you an idea of what size clamp you would need (slightly larger than the post since its clamping around the frame and post. Quick release clamps have a bit of variation since you can adjust the diameter slightly but tightening the screw.
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OLD SCHOOL RARE ELF SUPER LIGHT MICRO MINI DIA COMPE UNI SEAT SEAT POST CLAMP | ![]() |
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US $129.00 | 4d 10h 15m |
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Seat Clamp Mongoose Hoop-D 20 inch bicycle | ![]() |
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US $9.99 | 2d 3h 8m |
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Seat Clamp 1997 Matt Hoffman 20" George Freestyle BMX | ![]() |
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US $9.99 | 2d 3h 8m |
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1987 Old School BMX HARO FREESTYLER FSX MASTER PEREGRINE SEAT POST CLAMP | ![]() |
3 Bids | US $15.50 | 3d 9h 6m |
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Oldschool Hutch BMX Donut Seat Clamp Trickstar Windstyler Hollywood Windstyler | ![]() |
0 Bid | US $.99 | 4d 14h 11m |
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TNT Pro XL Old School BMX 20" BMX Frame NEW MINT w/ stamped seat clamp RARE | ![]() |
0 Bid | US $99.99 | 6d 6h 22m |
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SPANK BIKES TWEET TWEET SEAT CLAMP AQUA BLUE ANODIZED *NEW* | ![]() |
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US $14.99 | 2d 7h 41m |
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Odyssey Brand new black seat clamp fits gt haro hutch mongoose bmx bikes | ![]() |
1 Bid | US $2.00 | 2d 14h 48m |
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silver seat clamp tuff neck style fits gt haro hutch redline mongoose bmx bikes | ![]() |
0 Bid | US $1.00 | 2d 14h 53m |
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Nice orignal blue Dia Compe MX hinge seat clamp 1980's Japan made Old School BMX | ![]() |
0 Bid | US $149.99 | 2d 21h 56m |
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Nice orignal Dia Compe MX hinge seat clamp 1980's Japan made Old School BMX haro | ![]() |
0 Bid | US $99.99 | 3d 12h 48m |
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BMX Seat guts / clamp - 7/8" - SILVER - NEW! | ![]() |
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US $6.99 | 20d 20h 49m |
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FLATLAND BMX BICYCLE PRIMO 330 PIVOTAL SEAT POST & ODYSSEY MR CLAMPY CLAMP COMBO | ![]() |
3 Bids | US $10.99 | 2d 10h |
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Dia-Compe MX hinged old school BMX seat clamp 25.4mm (1") SILVER ANODIZED | ![]() |
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US $21.99 | 2d 11h 47m |
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XS seat post clamp in excellent condition! Joey Garcia Automatic! | ![]() |
0 Bid | US $7.99 | 5d 2h 45m |
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SEAT POST CLAMP Ø25.4 SUIT 22.2 POST SILVER ALUMINIUM 2 BOLT ALLEN HEAD | ![]() |
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US $9.72 | 15d 5h 37m |
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Crupi Seat Post Clamps 31.8 - White | ![]() |
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US $12.99 | 27d 21h 31m |
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Crupi Seat Post Clamps 25.4 - White | ![]() |
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US $12.99 | 26d 5h 12m |
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SINZ Quick Release Seat Clamp 25.4 - Black | ![]() |
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US $11.99 | 27d 21h 31m |
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GT Zaskar Lightning Seat Post Clamp Collar 32mm | ![]() |
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US $11.99 | 23d 4h 14m |
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Crupi Seat Post Clamps 25.4 - Blue | ![]() |
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US $12.99 | 26d 5h 12m |
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S&M XLT Seat Post Clamp BMX Race Street Dirt Jump Bike Holmes Old Mid School Red | ![]() |
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US $9.97 | 27d 21h 35m |
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SINZ Quick Release Seat Clamp 31.8 - Blue | ![]() |
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US $11.99 | 27d 21h 10m |
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Sunlite Micro Adjust Seat Post with Clamp 27.2 x 350mm Black | ![]() |
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US $27.99 | 10d 5h 42m |
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Tuf Neck style BMX alloy seat clamp 28.6mm 1 1/8" - RED | ![]() |
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US $11.99 | 7d 12h 51m |
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Bicycle seat "guts" clamp 7/8" OLD SCHOOL BMX GOLD | ![]() |
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US $8.99 | 29d 10h 47m |
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The Shadow Conspiracy Alfred BMX Seat Clamp Dark Green | ![]() |
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US $9.99 | 24d 7h 45m |
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NOS SEAT CLAMP BMX BLUE FITS ELF WITH 26.6MM POST NICE! | ![]() |
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US $14.99 | 10d 6h 16m |
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NEW Rail seat saddle seatpost clamp mount hardware blk | ![]() |
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US $5.95 | 25d 22m |
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Origin8 Pro-fit Seat Post Clamp 1 1/4" 31.8mm Yellow | ![]() |
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US $7.99 | 20d 5h |
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80s NOS Old School BMX GT Wing logo Bike Seat Post Clamp Very Rare Free Shipping | ![]() |
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US $55.00 | 25d 18h 15m |
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Tuf Neck style BMX alloy seat clamp 25.4mm RED ANODIZED | ![]() |
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US $9.99 | 2d 19h 1m |
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New BMX Freestyle Bicycle Bike Alloy Seat Post Clamp 25.4mm Hex Bolt Red | ![]() |
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US $6.99 | 10d 14h 18m |
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NOS Gt Bmx Seat post Clamp Fits Haro Redline Dk Gt | ![]() |
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US $29.99 | 21d 14h 9m |
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SINZ Quick Release Seat Clamp 31.8 - Red | ![]() |
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US $11.99 | 6d 1h 44m |
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Primo BMX Seat Clamp - Slim Seat Clamp - Polished Silver - 1-1/8" | ![]() |
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US $4.75 | 2d 55m |
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OLD SCHOOL BMX NOS AEROMAX SILVER ALLOY SEAT CLAMP TUFF NECK STYLE | ![]() |
1 Bid | US $5.99 | 4h 23m |
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OLD SCHOOL BMX NOS AEROMAX BLACK ALLOY SEAT CLAMP TUFF NECK STYLE | ![]() |
1 Bid | US $5.99 | 4h 23m |
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OLD SCHOOL BMX NOS AEROMAX GOLD ALLOY SEAT CLAMP TUF NECK STYLE | ![]() |
0 Bid | US $5.99 | 4h 23m |
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OLD SCHOOL BMX NOS AEROMAX GOLD ALLOY SEAT CLAMP | ![]() |
0 Bid | US $5.99 | 4h 23m |
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OLD SCHOOL BMX NOS AERO SEAT GUTS/CLAMP | ![]() |
0 Bid | US $3.50 | 4h 23m |
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Vintage NOS Old School BMX Bike ACS Silver Finished Seat Post Clamp 1" | ![]() |
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US $15.99 | 29d 17h 48m |
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BMX LOT OLD MID SCHOOL PARTS GT SPROKET TUFF NECK SEAT CLAMP DIA COPE BRAKE | ![]() |
16 Bids | US $23.50 | 10h 25m |
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NOS Vintage Cycle Pro Red Seat Post Clamp 25.4mm 1" BMX Old School Very Rare 1D | ![]() |
1 Bid | US $20.00 | 12h 21m |
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BMX Seat guts / clamp - 7/8" - SILVER - NEW! | ![]() |
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US $6.99 | 20d 20h 49m |
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TRANS X SEAT POST CLAMP -BLACK | ![]() |
0 Bid | US $10.99 | 1d 7h 30m |
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Schwinn seat clamp and bolt 1949? New
How can i build my own repair and truing stand?
i cant afford a new or even used repair stand and truing tool. i built a bootleg truing stand from and old fork and use the brake pads as a reference point. it works but only for non-disc front wheels. the stand i have now is actually a storage rack and it scuffs up the underside of the toptube. i want something that clamps the seat post.
is it possible to build a nice looking, functional repair and truing stand? i am willing to spend a few dollars but no more than $50 for the whole project.
You can buy a Park tool bike clamp and mount it to something solid. it's not a bad solution. They are not cheap thought and may cost you more than $50.



















































They are called top caps. You will have to go to the store that you purchased them at to replace them. Most stores that have parts like top caps have them in a limited supply and will only sell them to a customer who purchased the pool from them.
In the meantime, use duct tape. As ugly as it is, it is a multipurpose item!