£29.75 £35.00
Silva seat post binder bolt (to clamp the frame around the seat pin), hailing from Italy and in production from the 1980s to the 1990s (yet still new & unused after all this time!). Made from stainless steel and weighing in at 10 grams. A fine choice for keeping your vintage bike authentic, but also great for any other compatible bike.
OVERVIEW
TECHNICAL INFO
Clamp Opening - the minimum and maximum distance between the inside of the nut and bolt heads. The minimum is measured with the bolt tightened as much as possible (for hex head types this may mean the bolt end will stick quite far out of the nut). For the maximum opening we ensure 5-6 mm of thread remainis in the nut for a secure fixing.
Outer Diameter - the part that goes through the frame, most steel frames will take an 8 mm bolt whereas early lugged aluminium frames often have a larger hole that takes a 10 mm bolt diameter.
Bolt Fixing Type - some binder bolts have tightening mechanisms on both sides to secure the seatpost in the frame. Single sided bolts need something else to help; some have knurled parts that grip the inside of the bolt hole, others have a small notched 'key' locator that lines up with a cut-out in the frame (if you have one).
SUBSCRIBE TO GET THE FIRST SCOOP
Exclusive content, new products, subscriber only promotions. Delivered to your inbox by tiny cyclists, every few weeks.
Don't worry, you can unsubscribe at any time.
PEDAL PEDLAR
T: 02036758003 // E: info@pedalpedlar.co.uk
© 2026 Pedal Pedlar.
Ecommerce Software by Shopify