Simplex 3637 L Later Version NOS Vintage Stop & Demultiplicator Down Tube Gear Cable Guide / Clip

Simplex 3637 L Later Version NOS Vintage Stop & Demultiplicator Down Tube Gear Cable Guide / ClipOriginal part produced in the 1970s New old stock! Still unused after all these years Suitable for historic cycling events such as L'Eroica Worldwide shipping Simplex 3637 L down tube gear cable guide, hailing from France and in production during the 1970s (yet still new & unused after all this time!). Made from steel plastic and weighing in at 26 grams. A fine choice for keeping your vintage bike authentic, but also great for any other compatible

✓ Original part - produced in the 1970s
✓ New old stock! Still unused after all these years
✓ Suitable for historic cycling events such as L'Eroica
✓ Worldwide shipping

Simplex 3637 L down tube gear cable guide, hailing from France and in production during the 1970s (yet still new & unused after all this time!). Made from steel/plastic and weighing in at 26 grams. A fine choice for keeping your vintage bike authentic, but also great for any other compatible bike too.

If you're taking part in L'Eroica or any other vintage event, this is fully compliant - so rest assured, the pre-1987 police won't lock you up for having the wrong cable guide!

OVERVIEW

---

Condition - New Old Stock*
Production Era - 1970s
Country - French
Material - Steel / Plastic
Weight - 26 g
Stock Code - D-CGG35V

*New old stock items may have marks from storage over the years, and as we often have multiples they can vary from piece to piece, but they are always genuine new & unused items.

TECHNICAL INFO

---

Number of Cables - Double
Guide Type - Stop & Demultiplicator
Tube Diameter - 28.0 mm - 28.6 mm

▼SHIPPING, TAXES & RETURNS

---

We've been safely sending orders around the world since 2010. There's a handy shipping calculator on the shopping cart page so you can see the cost of postage as soon as you've added it to your basket. Your order will be carefully packed and sent with tracking & insurance, we despatch most orders within 2-3 days but larger items and orders placed before the weekend can take an extra day or two to process.

We accept returns, please notify us within 14 days and ensure the item arrives back with us no later than 30 days after the order was received.

EU Customers – for orders under €150 (excluding shipping), VAT will be collected at checkout, but from 1st July 2026, due to new EU import regulations, there may also be a customs duty payable to the carrier. For orders over €150, all import fees will be payable to the carrier, with nothing collected at checkout.

USA Customers – import fees are now collected at checkout for all orders to the US, so there won’t be any surprise charges when your order arrives.

Other International Customers – local import fees may still apply, charged by your customs office or courier before delivery. These are not collected by us, so please check your local rates before purchasing.

Any applicable fees will appear at checkout.

▼HELP SECTION

---

Number of Cables - the number of cables the guide is designed to accept.

Guide Type - some setups require specific guides for the derailleurs to operate correctly. Tunnels simply act as a channel to guide the cable whereas stops create an end point for the cable housing, giving the cable the leverage it needs. Bar control stops are required when using handlebar shifters if your frame doesn't have any guides or braze-ons.

Tube Diameter - most steel (and early lugged aluminium) frames will have a down tube of 28.0 mm - 28.6 mm, this was standard for a long time but there are 'oversized' steel and aluminium tubes that have a diameter of 31.8, 34.9 and even 38.1 mm.