Sigma Sports Fillet brazed Winter trainer 56/57 SOLD

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  • Selling my Sigma after making the transition to disc.

    56ctc top tube - effective probably more like 57cm.
    Fitted new jockey wheels, 105 cassette, kmc chain and TA 52 chainring as of last month.

    Beautiful fillet brazed frame with really unusual upside down diamond shaped tubing and Surly horiztonal touring dropouts - making it single speed compatible.

    I bought it from a guy who worked and raced for Sigma. Saffron Frameworks told me it was built by Lee Cooper but I don't have any supporting evidence, little to no info online but either way its pretty unique.

    Ideal winter bike, with mudguard mounts on front and rear for full length mudguards and long drop calipers. Space for 28mm on back and 25mm on front with guards. Probably fit 30-32 on back and 28-30 on front without.

    Bad bits-
    -Just had the wheels trued and one of the nipples has partially pulled through the rear rim, have been riding it and hasnt exploded (I'm heavy)
    -Quite a few paint chips but seems to have been very well primed
    -I'll put on some cheapy new brake pads I've got laying around but would benefit from some proper wet weather ones.

    Currently borrowing the stem, so will be available within a week or so, or 90mm 6degree Kona stem if you prefer.

    No Pedals but can provide flats if you want to test ride.

    Looking for *SOLD. Thanks.
    *Collection from Sydenham

    Rivendell Ruffy tuffy and mile muncher tyres
    Deda zero100 120mm 8 degree stem
    Pro lt compact bars 44cm
    TA 52t / Ultegra 39t 130bcd chainrings
    Ultegra sl Crankset 172.5
    Ultegra f+r mech
    105 10 speed 11-28 Cassette
    105 10speed shifters
    TRP RG957 Long drop Calipers
    Ambrosio i20 tubeless 20mm internal compatible wheelset
    Chris King headset
    ITM vista 1 1/8th carbon forks
    KMC chain


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  • My mate has the same colour with carbon bstay version lovely ride he said..


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  • This looks nice. Would collection be in London/whereabouts?

  • Looks very similar design to condor squadra with the carbon rear end. Could be the same production perhaps.

  • Thanks should have put that in the description, Sydenham.

  • Yeah those are really nice and actually come up for sale from time to time, good for a racey build. I believe the carbon stay version is Aluminium though?

  • It's definitely carbon with a alloy frame and a carbon fork.


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  • Sorry yeah I meant the frame, as opposed to mine which is steel

  • The stem is just a place holder and I forgot to put brake pads back on before


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  • some of the damage


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  • *edited

  • sold

  • I bought it from a guy who worked and raced for Sigma. Saffron Frameworks told me it was built by Lee Cooper but I don't have any supporting evidence, little to no info online but either way its pretty unique.

    Sigma used to get their frames built in Italy by Billato.

  • Interesting, I don't know anything about them, there has never seemed to be much online about the Sigmas. Not sure what made him think it was Lee Cooper then...

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Sigma Sports Fillet brazed Winter trainer 56/57 SOLD

Posted by Avatar for doug1e @doug1e

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