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Seatpost 'set back'

Hi, looking at a new seat post but all the ones I fancy are 25mm set back compared to my existing posts 20mm set back. I was retul fitted for the bike so don't want to play about too much with the set up. If I go for the 25mm set back post is it just a case of moving the seat 5mm forward, or is there more to it than that  7

thanks...

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hampstead_bandit | 9 years ago
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Before you change your seat post, grab a tape measure and measure saddle nose tip to the centre slot of the handlebar stem clamp. Measure crank axle centre to top of saddle body. Write this down. Also take a photo showing angle.

When fitting your new post, replicate your measurement. If the saddle rails are too short, sell the new post and refit your old post.

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CXR94Di2 | 9 years ago
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Measure the seat position accurately from various points to give height, tilt and forward position to handlebars.

Replace seat stem and use measurements to fit seat

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