Seatpost Clamp
would a bike frame with a 27.2 seatpost use a 34.9 clamp or a 31.8?

31.8 clamp

GMC Denali Road Bike (all yellow and white)

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Campagnolo C Record Seatpost  Upper and Lower Clamps


Campagnolo C Record Seatpost  Upper and Lower Clamps


$34.99


Vintage Seatpost Clamp for Old School Schwinn Seatpost 5/8 inch


Vintage Seatpost Clamp for Old School Schwinn Seatpost 5/8 inch


$8.99


New XLC Quick Release Seatpost Clamp Alloy 31.8mm Black Fixie Hybrid MTB Bike


New XLC Quick Release Seatpost Clamp Alloy 31.8mm Black Fixie Hybrid MTB Bike


$7.99


New XLC Quick Release Seatpost Clamp Alloy 34.9mm Black Fixie Hybrid MTB Bike


New XLC Quick Release Seatpost Clamp Alloy 34.9mm Black Fixie Hybrid MTB Bike


$7.99


SE Racing BMX Seatpost 27.2 Diameter 350mm Length 1 Bolt Clamp Black Silver Logo


SE Racing BMX Seatpost 27.2 Diameter 350mm Length 1 Bolt Clamp Black Silver Logo


$29.95


Haro Seat Post Clamp


Haro Seat Post Clamp


$6.00


Al Aluminium Bicycle Bike Cycling Quick Release Seatpost Clamp 30.8/30.9/31.6


Al Aluminium Bicycle Bike Cycling Quick Release Seatpost Clamp 30.8/30.9/31.6


$0.99


Advanced Red Bicycle Bike Cycling QR Quick Release Seatpost Clamp 27.2


Advanced Red Bicycle Bike Cycling QR Quick Release Seatpost Clamp 27.2


$6.99


Salsa Seat Post Clamp 35.0mm Black


Salsa Seat Post Clamp 35.0mm Black


$19.99


CANNONDALE Alloy Seat Post Double Clamp Collar 34.9/31.6 mm - Ti


CANNONDALE Alloy Seat Post Double Clamp Collar 34.9/31.6 mm – Ti


$19.90


 Bicycle Seat Clamp Assembly for Top of Seat Post NEW


Bicycle Seat Clamp Assembly for Top of Seat Post NEW


$3.50


USED Maverick Mountain Bike Quick Release QR Seatpost Clamp 30.9mm


USED Maverick Mountain Bike Quick Release QR Seatpost Clamp 30.9mm


$9.99


20


20″ bmx bicycle powerlite chrome seat post clamp fits haro gt diamondback ect.


$25.00


Aero Lightweight Seat Post Clamp 1 1/8


Aero Lightweight Seat Post Clamp 1 1/8″ Silver


$3.96


Lowrider 1


Lowrider 1″ Gold Seat Post Clamps / Qty 2 Seat Clamps


$3.16


Heavy Duty Seat Post Clamp / Replacment Seat Post Clamp


Heavy Duty Seat Post Clamp / Replacment Seat Post Clamp


$2.36


Odyssey GI 1 1/8 Silver Alloy Seat Post Clamp


Odyssey GI 1 1/8 Silver Alloy Seat Post Clamp


$3.16


Odyssey GI 1 1/8 Black Alloy Seat Post Clamp


Odyssey GI 1 1/8 Black Alloy Seat Post Clamp


$3.16


Old School Single Bolt Silver Seat Post Clamp NOS


Old School Single Bolt Silver Seat Post Clamp NOS


$3.96


Alloy Single Bolt Silver BMX Seat Post Clamp NOS


Alloy Single Bolt Silver BMX Seat Post Clamp NOS


$3.96


Old School Double Bolt Silver Seat Post Clamp New


Old School Double Bolt Silver Seat Post Clamp New


$5.56


Alloy Single Bolt Black BMX Seat Post Clamp NOS


Alloy Single Bolt Black BMX Seat Post Clamp NOS


$3.96


Vintage NOS Old School BMX Bike ACS Silver Finished Seat Post Clamp 1


Vintage NOS Old School BMX Bike ACS Silver Finished Seat Post Clamp 1″


$15.99


FAR NEAR seatpost QR clamp GREEN 34.9mm ROAD BIKE MTB


FAR NEAR seatpost QR clamp GREEN 34.9mm ROAD BIKE MTB


$29.95


Odyssey Pozi-Stop ~ Seat Post Clamp / Cable Router


Odyssey Pozi-Stop ~ Seat Post Clamp / Cable Router


$0.99


New BMX Seat Post Clamp 25.4mm Hex Bolt Black


New BMX Seat Post Clamp 25.4mm Hex Bolt Black


$6.99


Vintage Old School Bmx /  Mountain Bike Specialized 1 1/8 Lrg Seat Post Clamp


Vintage Old School Bmx / Mountain Bike Specialized 1 1/8 Lrg Seat Post Clamp


$15.00


Unbranded Carbon Mountain Bike frame 19


Unbranded Carbon Mountain Bike frame 19″ Large Cane Creek HS, seatpost, clamp


$236.00


FAR NEAR BLUE SEATPOST CLAMP 34.9MM MTB ROAD BIKE 7075


FAR NEAR BLUE SEATPOST CLAMP 34.9MM MTB ROAD BIKE 7075


$24.95


BMX BICYCLE FLATLAND HEADSET & SEATPOST CLAMP QUAMEN ODYSSEY RED EXCELLENT


BMX BICYCLE FLATLAND HEADSET & SEATPOST CLAMP QUAMEN ODYSSEY RED EXCELLENT


$16.50


[Mr_Ride] Campagnolo 34.9mm ~ 35.2mm  Seat Post Clamp


[Mr_Ride] Campagnolo 34.9mm ~ 35.2mm Seat Post Clamp


$8.95


New KCNC SC11 seatpost clamp, 34.9mm, 11g, Gold


New KCNC SC11 seatpost clamp, 34.9mm, 11g, Gold


$22.99


ODYSSEY BMX SEAT POST NOS CLAMP DRILLED BLACK FREESTYLE RACING CRUISER


ODYSSEY BMX SEAT POST NOS CLAMP DRILLED BLACK FREESTYLE RACING CRUISER


$20.00


DK BMX SEAT POST CLAMP OLD SCHOOL fits BOSS TNT PATTERSON GT REDLINE MONGOOSE CW


DK BMX SEAT POST CLAMP OLD SCHOOL fits BOSS TNT PATTERSON GT REDLINE MONGOOSE CW


$7.99


J&L Ti/Titanium bolt Seatpost clamp 31.8/34.9-9g Red-Mountain&Road bike


J&L Ti/Titanium bolt Seatpost clamp 31.8/34.9-9g Red-Mountain&Road bike


$0.99


J&L Titanium bolt Seatpost clamp 31.8/34.9-9g Black/Ti-Mountain&Road bike


J&L Titanium bolt Seatpost clamp 31.8/34.9-9g Black/Ti-Mountain&Road bike


$0.99


HUTCH STAMPED BMX SEAT POST CLAMP HOLLYWOODJUDGE TRICKSTAR CRUISER PRO


HUTCH STAMPED BMX SEAT POST CLAMP HOLLYWOODJUDGE TRICKSTAR CRUISER PRO


$19.99


J&L Titanium bolt Seatpost clamp 31.8-9g White/Ti-Mountain&Road bike


J&L Titanium bolt Seatpost clamp 31.8-9g White/Ti-Mountain&Road bike


$0.99


Bike Fire Eye Seatpost QR Clamp Seat Clamp


Bike Fire Eye Seatpost QR Clamp Seat Clamp “FE-QR” 29.8MM


$15.95


TOPEAK DEFENDER RX QR SEATPOST CLAMP REAR BLACK BICYCLE FENDER


TOPEAK DEFENDER RX QR SEATPOST CLAMP REAR BLACK BICYCLE FENDER


$15.00


New EdgeElite Seat Post Clamp, Pick Your Size         ~


New EdgeElite Seat Post Clamp, Pick Your Size ~


$4.99


J&L Titanium bolt Seatpost clamp 31.8/34.9-9g Green/Ti


J&L Titanium bolt Seatpost clamp 31.8/34.9-9g Green/Ti


$0.99


Hope Technology Seatpost Clamp // 34.9mm Road Mountain Bike Quick Release QR MTB


Hope Technology Seatpost Clamp // 34.9mm Road Mountain Bike Quick Release QR MTB


$14.99


VINTAGE SCHWINN STINGRAY SEAT POST CLAMP WITH


VINTAGE SCHWINN STINGRAY SEAT POST CLAMP WITH “S” BOLT


$6.99


New BlackOps True Carbon Seat Post Clamp 34.9 or 31.8


New BlackOps True Carbon Seat Post Clamp 34.9 or 31.8


$12.99


VINTAGE 79' SCHWINN  SEAT POST CLAMP with


VINTAGE 79′ SCHWINN SEAT POST CLAMP with “S” BOLT & NUT~from a VARSITY


$9.99


GT Seat Post clamp


GT Seat Post clamp


$0.99


1 IN. SEAT POST CLAMP TUF NECK OLD SCHOOL BMX SEATPOST CLAMP TUFNECK TUFF RARE


1 IN. SEAT POST CLAMP TUF NECK OLD SCHOOL BMX SEATPOST CLAMP TUFNECK TUFF RARE


$25.66


Bike Seat Post Quick Release Clamp Ø31.8mm - Silver Color


Bike Seat Post Quick Release Clamp Ø31.8mm – Silver Color


$0.99


Bike Seat Post Quick Release Clamp Ø31.8mm - Red Color


Bike Seat Post Quick Release Clamp Ø31.8mm – Red Color


$0.99


Bike Seat Post Quick Release Clamp Ø31.8mm - Grey Color


Bike Seat Post Quick Release Clamp Ø31.8mm – Grey Color


$0.99


Atik token Titanium Bike MTB Road Seat post Clamp 31.8m 22.5g - AT1271


Atik token Titanium Bike MTB Road Seat post Clamp 31.8m 22.5g – AT1271


$64.95


Campagnolo Seat Post Clamp 34.9mm Alloy Black NEW


Campagnolo Seat Post Clamp 34.9mm Alloy Black NEW


$8.50


SILVER SEATPOST CLAMP 34.9MM BIKE ROAD MTB UNO


SILVER SEATPOST CLAMP 34.9MM BIKE ROAD MTB UNO


$13.85


IBIS Quick Release Seatpost clamp, 31.6mm, RED


IBIS Quick Release Seatpost clamp, 31.6mm, RED


$10.00


XLC Bike Bicycle Seatpost w/o Clamp 300mm NEW 26.8 Sil Under 6oz


XLC Bike Bicycle Seatpost w/o Clamp 300mm NEW 26.8 Sil Under 6oz


$12.79


SE Racing BMX Seatpost 26.0 Diameter 250mm Length 1 Bolt Clamp Silver SE Logo


SE Racing BMX Seatpost 26.0 Diameter 250mm Length 1 Bolt Clamp Silver SE Logo


$29.95


FAR NEAR seatpost QR clamp RED 34.9mm ROAD BIKE MTB


FAR NEAR seatpost QR clamp RED 34.9mm ROAD BIKE MTB


$29.95


DIA COMPE 80s seat post clamp gt hutch haro se redline


DIA COMPE 80s seat post clamp gt hutch haro se redline


$69.99


BICYCLE SEATPOST CLAMP 31.8 BLACK ALLOY SEATPOST CLAMP NEW..QR SEATPOST CLAMP


BICYCLE SEATPOST CLAMP 31.8 BLACK ALLOY SEATPOST CLAMP NEW..QR SEATPOST CLAMP


$7.45


BICYCLE SEATPOST CLAMP 28.6 BLACK ALLOY SEATPOST CLAMP NEW..QR SEATPOST CLAMP


BICYCLE SEATPOST CLAMP 28.6 BLACK ALLOY SEATPOST CLAMP NEW..QR SEATPOST CLAMP


$7.45


New Black Bike Bicycle Quick Release Seat Post Clamp Binder Bolt 6 x 55mm Pole


New Black Bike Bicycle Quick Release Seat Post Clamp Binder Bolt 6 x 55mm Pole


$0.99


Vintage 1980 Schwinn XR7 Exercise Bicycle Seat Post Clamp


Vintage 1980 Schwinn XR7 Exercise Bicycle Seat Post Clamp


$9.99


Campagnolo Campy Alloy Seat Post Seatpost Clamp 31.8 mm


Campagnolo Campy Alloy Seat Post Seatpost Clamp 31.8 mm


$7.99


NEW GoPro Ride HERO Expansion Part Handlebar / Seatpost / Tube Clamp


NEW GoPro Ride HERO Expansion Part Handlebar / Seatpost / Tube Clamp


$19.99


TRANZ-X Seatpost Clamp 34.9mm Aluminum Silver - Free Ship


TRANZ-X Seatpost Clamp 34.9mm Aluminum Silver – Free Ship


$11.99


Vintage Bicycle 1968 Schwinn Stingray Deluxe Fastback Krate Seat Post Clamp


Vintage Bicycle 1968 Schwinn Stingray Deluxe Fastback Krate Seat Post Clamp


$9.99


Shimano Pro Seatpost Clamp Pro 28.6mm Ice Grey


Shimano Pro Seatpost Clamp Pro 28.6mm Ice Grey


$20.67


Crank Brothers Seatpost Clamp 35mm


Crank Brothers Seatpost Clamp 35mm


$20.00


SCHWINN KRATE / STING-RAY SEAT POST CLAMP COMPLETE VERY NICE ITEM


SCHWINN KRATE / STING-RAY SEAT POST CLAMP COMPLETE VERY NICE ITEM


$23.95


VTG SCHWINN S STYLE SEAT POST CLAMP NEW CHROME FITS ALL


VTG SCHWINN S STYLE SEAT POST CLAMP NEW CHROME FITS ALL


$9.99


VTG SCHWINN SEAT POST CLAMP A.S. A S LONG STYLE MINT JAGUAR PANTHER STINGRAY 63


VTG SCHWINN SEAT POST CLAMP A.S. A S LONG STYLE MINT JAGUAR PANTHER STINGRAY 63


$9.99


 VTG SCHWINN A. S. AS SEAT POST CLAMP RECHROMED AUTHENTIC MINT PHANTOM WASP S 2


VTG SCHWINN A. S. AS SEAT POST CLAMP RECHROMED AUTHENTIC MINT PHANTOM WASP S 2


$9.99


VTG SCHWINN S STYLE SEAT POST CLAMP NEW CHROME FITS ALL


VTG SCHWINN S STYLE SEAT POST CLAMP NEW CHROME FITS ALL


$9.99


Ex Display Mountain / Road Bike Seatpost Clamp - Black 35mm


Ex Display Mountain / Road Bike Seatpost Clamp – Black 35mm


$1.55


Vintage / Retro / Fixie 27 mm Allen Key Bolt clamp for a bicycle seatpost


Vintage / Retro / Fixie 27 mm Allen Key Bolt clamp for a bicycle seatpost


$5.47


New Token Seat post Clamp Quick release 31.8mm **Red**


New Token Seat post Clamp Quick release 31.8mm **Red**


$22.95





” TI BOLT ” TOKEN SEATPOST QR CLAMP 34.9MM 26G – MTB ROAD – GREEN


$32.00


Blue Bicycle Bike Seatpost Clamp 31.8mm Quick Release


Blue Bicycle Bike Seatpost Clamp 31.8mm Quick Release


$5.39


XLC Bike Bicycle Seatpost with Clamp 350mm NEW 25.8 Blk Aluminum


XLC Bike Bicycle Seatpost with Clamp 350mm NEW 25.8 Blk Aluminum


$0.99


Vintage Old School BMX Mountain Bike Black Xcaliber Seat Post Clamp


Vintage Old School BMX Mountain Bike Black Xcaliber Seat Post Clamp “NICE”


$20.00


VINTAGE SCHWINN STINGRAY BICYCLE BIKE S SEAT POST CLAMP


VINTAGE SCHWINN STINGRAY BICYCLE BIKE S SEAT POST CLAMP


$12.99


TI Bicycle Bike Seatpost Clamp 31.8mm Quick Release


TI Bicycle Bike Seatpost Clamp 31.8mm Quick Release


$5.39


2 VINTAGE SCHWINN JAGUAR CORVETTE BICYCLE BIKE AS BOLT SEAT POST CLAMP


2 VINTAGE SCHWINN JAGUAR CORVETTE BICYCLE BIKE AS BOLT SEAT POST CLAMP


$19.99


Thomson Elite Seatpost // 27.2 Clamp 410mm Road Mountain Bike Seat Post Black XC


Thomson Elite Seatpost // 27.2 Clamp 410mm Road Mountain Bike Seat Post Black XC


$39.99


Free Agent BMX 28.6 Seat Post Clamp with Bolt. Black.  *NEW + FREE SHIPPING*


Free Agent BMX 28.6 Seat Post Clamp with Bolt. Black. *NEW + FREE SHIPPING*


$9.99


Rock Shox Reverb Hydraulic Seatpost // 30.9 Clamp 420mm Mountain Bike Dropper XC


Rock Shox Reverb Hydraulic Seatpost // 30.9 Clamp 420mm Mountain Bike Dropper XC


$52.00


SCHWINN STINGRAY KRATE FASTBACK OTHERS S BOLT SEAT POST CLAMP RIDER QUALITY


SCHWINN STINGRAY KRATE FASTBACK OTHERS S BOLT SEAT POST CLAMP RIDER QUALITY


$6.99


NEW Thomson Masterpiece Seatpost Rail Clamp Part


NEW Thomson Masterpiece Seatpost Rail Clamp Part


$7.99


NEW KCNC SC9 Seatpost Clamp Road MTB Bike 31.8mm Black


NEW KCNC SC9 Seatpost Clamp Road MTB Bike 31.8mm Black


$23.99


NOS VINTAGE HI-CALIBER SEATPOST CLAMP OUT OF 1987 HUTCH WINDSTYLER BUILD KIT BMX


NOS VINTAGE HI-CALIBER SEATPOST CLAMP OUT OF 1987 HUTCH WINDSTYLER BUILD KIT BMX


$20.50


BBB Carbon Strangler Aluminum 31.8 Seatpost Clamp Black 25g


BBB Carbon Strangler Aluminum 31.8 Seatpost Clamp Black 25g


$6.95


BBB Strangler Aluminum Seatpost Clamp 31.8 Black BSP-80


BBB Strangler Aluminum Seatpost Clamp 31.8 Black BSP-80


$6.95


Brand New Black Bicycle Bike Cycling Flip Lock Seatpost Seat Clamp 6061


Brand New Black Bicycle Bike Cycling Flip Lock Seatpost Seat Clamp 6061


$6.29


Campagnolo Super Record/1st C Record seat post cradle and clamp (NOS)


Campagnolo Super Record/1st C Record seat post cradle and clamp (NOS)


$35.00


SE Bikes BMX Seatpost 25.4 Diameter 300mm Length 2 Bolt Clamp Zero Set Back


SE Bikes BMX Seatpost 25.4 Diameter 300mm Length 2 Bolt Clamp Zero Set Back


$19.95


VINTAGE 1971 SCHWINN STINGRAY BICYCLE


VINTAGE 1971 SCHWINN STINGRAY BICYCLE “S” SEAT POST CLAMP CRATE BIKE BANANA


$2.25


SILVER SEATPOST CLAMP 31.8MM BIKE ROAD MTB UNO


SILVER SEATPOST CLAMP 31.8MM BIKE ROAD MTB UNO


$13.85


MORTOP MTB ROAD QR SEATPOST CLAMP 40MM 22g BIKE RED


MORTOP MTB ROAD QR SEATPOST CLAMP 40MM 22g BIKE RED


$34.95


XS seat post clamp in excellent condition! Joey Garcia Automatic!


XS seat post clamp in excellent condition! Joey Garcia Automatic!


$7.99


OnGuard 3 Piece Locking Skewers


OnGuard 3 Piece Locking Skewers


$45.99


Replaces existing wheel and seat quick releases. Cold forged steel. One key unlocks all three….

ACTION SADDLE CLAMP BOLT SQUARE W/2 NUTS


ACTION SADDLE CLAMP BOLT SQUARE W/2 NUTS


$1.99


Replacement bolt with two nuts, square profile, fits seat clamp hardware….

Car Headrest Mount Holder for Apple iPad


Car Headrest Mount Holder for Apple iPad


$10.00


Black Headrest mounting bracket for Apple iPad. Mounts to the arms of height adjustable headsets of cars. Mounts to the back of the front seat for viewing from passengers in the back seat. More stable than soft bag systems that use straps to secure the device….

DBTech Car Headrest Mount Holder For Archos 101, Archos 70, Archos 9 - Include 5 ft. 3.5mm AUX Cable


DBTech Car Headrest Mount Holder For Archos 101, Archos 70, Archos 9 – Include 5 ft. 3.5mm AUX Cable


$14.99


DBTech Car Headrest Mount Holder For Archos 101, Archos 70, Archos 9 – Include 5 ft. 3.5mm AUX Cable…

Igrip New Viewer Backseat Movie Watching Mount For Ipod


Igrip New Viewer Backseat Movie Watching Mount For Ipod


$22.00


New iGRIP VIEWER Kit Mount iGRIP Phone Holders help keep your iPod/Phone in a secure and easy to view position while driving. Mounts can be adjusted to any viewing angle. Experience total hands-free driving. The perfect companion for Bluetooth Solutions. Holders work with most iPods & Phones. Mounts work in all vehicles. VIEWER Kit. Backseat TC, movie, and iPod watching. Clamps to a…

Topeak Handy Phone Pack (Small)


Topeak Handy Phone Pack (Small)


$9.35


Topeak Cell Phone Bag Quick-release clamp fits around bar or stem Durable neoprene construction to hold your phone tightly Also holds a pen or sunglasses in side loop 2.2″ x 1.0″ x 4.1″ Black 36 grams Manufacturer Part Number: TC2228B UPC: 768661113551…

DBTech Universal Car Headrest mount Holder cradle for DVD Player's, Tablet's, E-reader's. - Include 5 ft. 3.5mm AUX Cable


DBTech Universal Car Headrest mount Holder cradle for DVD Player’s, Tablet’s, E-reader’s. – Include 5 ft. 3.5mm AUX Cable


$14.99


DBTech Universal Car Headrest mount Holder cradle for DVD Player’s, Tablet’s, E-reader’s. – Include 5 ft. 3.5mm AUX Cable…

DB Tech Car Headrest Mount Holder For New Apple iPad 2 WiFi / 3g - Works with all Cases and Sleeves - Includes 5 ft. 3.5mm AUX Cable


DB Tech Car Headrest Mount Holder For New Apple iPad 2 WiFi / 3g – Works with all Cases and Sleeves – Includes 5 ft. 3.5mm AUX Cable


$14.99



DBTech Car Headrest Mount Holder For Amazon Kindle Fire - Includes 5 ft. 3.5mm AUX Cable


DBTech Car Headrest Mount Holder For Amazon Kindle Fire – Includes 5 ft. 3.5mm AUX Cable


$14.99



GoPro Handlebar Seatpost Mount for HERO Cameras


GoPro Handlebar Seatpost Mount for HERO Cameras


$19.99


GoPro Camera Accessories. Features: Replacement wrist housing for Digital HERO 3…


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