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Upgrade for a Specialized Sirrus Comp 2009

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Upgrade for a Specialized Sirrus Comp 2009

Old 05-28-14, 03:41 AM
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Upgrade for a Specialized Sirrus Comp 2009

Hello there,

I am new to this and new to bike upgrades in general...

I have a few questions about some upgrades for a Specialized Sirrus Comp 2009.

It's this one here:
Evans Cycles | Specialized Sirrus Comp 2009 Hybrid Bike | Online Bike Shop

I have used this bike a few years ago for commuting to work, which was fine. It has been sat in the garage for over a year now and I want to upgrade a few parts to take it off road sometimes (country lanes/gravel/mud), nothing too hardcore though.

Is it possible to change the current tyres 700x28 to a 700x40? some shops says yes but some say they won't recommend going over 700x35, but i have seen a few photos online of a few with 700x37. I just need something a bit more grippy and puncture resistant. Any recommendation on tyres? I don't have mud guards on my bike.

I would also like to upgrade the handlebars to something like this:

Syncros FL1.5 31.8mm 15mm Riser Handlebar | Evans Cycles

Is that possible? will all my brakes/gears fit on any handlebars?

Would be grateful to see examples of others who has done some upgrades to their Sirrus.

Thank you very much.
adamski3 is offline  
Old 05-28-14, 04:59 AM
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The handlebar will work fine, the brake levers / shifters are standard sizes.

For the tires, you need to measure to see how much clearance there is, if you are intending to go through mud, factor this in with the clearance.

For what tires, how much do you want to spend, say a basic Schwalbe Marathon will cost from about 10 each to high end ones going upto 50 each; the more you pay, the faster and lighters they will be.
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