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GSPChilliwack

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Discussion starter · #1 ·
Hello,
I’m going to build my SO a flat bar “gravel” bike to replace her department store boat anchor. I’m going to the parts bin for this—I have thru-axle(non-boost) or QR 29” wheel sets, although the TA wheels are far nicer (CK/Hope hubs), a take-off 12 spd NX drivetrain, and plenty of bars/stems kicking around. I’m not sure what to do for the frame—mtb hardtail? She’s 5’2”. Gravel paths, *****, and the occasional FSR. The bike won’t be ridden hard, but she’s looking to increase her mileage significantly. Not interested in curly bars. I’d like tires to be 40’s at a minimum. I do want it to look nice, which makes everything a little more difficult.
 
Knolly Cache can handle 50+mm tires. The 49cm is out of stock but if she's going flat bar a 52cm with a 393mm reach would work well.

 
If you are going to all this effort, make it LIGHT! She is small, the bike build should be LIGHT. And really, a very light mountain bike frame is easier to find, and used are all over the interweb from the last decade... it's also the best option for flat bar, and to save a ton or weight and money, just put a eBay carbon fork on it. Far more versatile down the road as well, in a quick rip through the garage you can drop on some bigger tires and down the chunky trail she goes. Gravel bikes are compromises, and anything cost effective will have outdated tire clearance, which could be very frustrating in the future. With a very small, light mtb, you can put 45s or 2.3's..

DT
 
The Sirrus X family of bikes from Specialized are hybrids with a very upright riding posture, but they'll take up to around 45/42mm tires F/R and make a pretty comfy flat bar gravel bike. I have a Sirrus X 5.0 built up around 17 lbs that is my preferred bike for fire roads and light single track, but with Gravelking SS's is still pretty quick on pavement. If you want to spend less but keep the same geometry, the Sirrus X 2.0 - 4.0 are lots cheaper and probably more durable with alloy frames.

Just my personal opinion, but if you want a lot more rough trail capability than something like a Sirrus X in a flat bar bike you might as well just get a hardtail MTB.
 
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