51.5cm Obiso Cromovelato Vintage Italian Road Bike Frame

✓ Original vintage frame - built in the 1980s
✓ Super lightweight for the era - only 2.3 kg!
✓ Suitable for historic cycling events such as L'Eroica
✓ Thoroughly checked over & photographed in detail
✓ Worldwide shipping

Bearing more than a passing resemblance to a Wilier Triestina Ramata this copper-orange cromovelato Obiso branded road frame is small but perfectly formed. Obiso is a long standing bicycle shop located in Rome, and legend has it that Vetta built frames for them (a quick browse of their website will bring up some great photos of their Ciclo Obisio-Canon cycling team). The cut-out lugs, Columbus branded seat stay caps and fork crown, alongside the lightened BB shell and a finish of the highest standard certainly make this plausible. Once you get past the stunning coppery-orange-lacquer-over-chrome paint job, the most intriguing feature of this frame is the indented seat tube combined with vertical Campagnolo dropouts to really tuck the wheelbase in, the low overall weight adds to the impression that this frame was designed to go fast, most likely a time trial machine. This one really is up there with Italy's finest, Vetta built or not, it's a wonderful example of a thoroughbred race frame begging to be built back up with a top-end Italian groupset and ridden fast, just as God (or Vetta) intended.

If you're taking part in L'Eroica or a similar vintage event, this frame is of the correct age, so you won't be disqualified for being a rule breaker!

The frame's been carefully checked by one of our mechanics to confirm the alignment's correct and there's no damage to the threads. If there are any minor issues worth noting we will do so in the overview section below. Please take a good look at the detailed photos so you can see the cosmetic condition of the frame before you buy.


Era - 1980s
Country - Italian
Frame Material - Steel
Tubing - Columbus
Weight - 2.305 kg
Stock Code - U-F-R23V


Size Guide* - Small (Approx 30" Inside Leg)
Seat Tube (ctc) - 51.5 cm
Top Tube (ctc) - 53.5 cm
Head Tube - 106 mm
Chainstay Length - 39 cm
Wheelbase - 96 cm

*This is just a guide, not a guarantee the frame will fit as every rider is different. If you're unsure of your size we'd always recommend trying out a bike with similar frame dimensions first.


Rear Spacing - 120 mm
Front Spacing - 101 mm
Seatpost Diameter - 27.2 mm
Wheel Size - 700c/28"
Brake Fixing - Recessed Allen Key
Brake Drop - 47 mm
Bottom Bracket Thread - Italian Thread
Headset Thread - Standard ISO (24 TPI - British/Italian)
Headset Stack Height - 43 mm
Fork Crown Race - 26.4 mm (ISO)
Shifter Fittings - Downtube Braze-On
Headtube Internal Diameter - 30.1 mm
Steerer Internal Diameter - 22.2 mm (Standard)


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.

We don't charge VAT, however, if buying from outside of the UK please remember that there may be import fees to pay directly to the delivery company before receiving the order. Unfortunately we can’t advise on the exact costs as it varies from country to country, so please check your national rates before purchasing.