Sirrus X 4.0 VS Trek FX Sport 5
07-14-22, 02:44 PM
#1
Newbie
Thread Starter
Sirrus X 4.0 VS Trek FX Sport 5
I've been narrowing things down lately and really think that the Sirrux X is what I want. I need to bump up the speed and intensity for some rides from the Comfort bike I already have, want something that can venture on to the lightest well groomed singletrack and not turn into a **** show but it's main focus will be limestone/rail trails of mixed to good quality, spinning it out. Both of these run 38/40 tires, it appears that the Trek is the better value if you consider Carbon to be a weight and compliance advantage but the future shock handlebar suspension is intriguing and I think it could make a big difference as the roughness increases.
Highlights:
Sirrus X 4.0- 20mm handlebar suspension, carbon fork, Deore 1X11 drivetrain with close spaced ratios
Trek FX Sport 5- Full carbon, partial GRX (Crank/Derailleur) 1X11 drivetrain with close spaced ratios
Want:
Hybrid style because it's harder
Compliance for days but no front suspension fork
Fat tires
Light weight but anything in the 24 Lb and lower areas should be fine
Do we like Trek Carbon these days? Do we like future shock 1.5? Is Future shock 1.5 as maintenance intensive as cheap coil shocks? These bikes are more similar than different but the FX sport 5 is full carbon (instead of just the fork). Seems to me that the Specialized might actually be a better fit, bit more upright but the extra 500 dollars for the Trek seems to be a great deal considering the full carbon and GRX groupset. I hope to take these bikes on singletrack of the easiest type for perhaps 10-20 percent of their riding.
Highlights:
Sirrus X 4.0- 20mm handlebar suspension, carbon fork, Deore 1X11 drivetrain with close spaced ratios
Trek FX Sport 5- Full carbon, partial GRX (Crank/Derailleur) 1X11 drivetrain with close spaced ratios
Want:
Hybrid style because it's harder
Compliance for days but no front suspension fork
Fat tires
Light weight but anything in the 24 Lb and lower areas should be fine
Do we like Trek Carbon these days? Do we like future shock 1.5? Is Future shock 1.5 as maintenance intensive as cheap coil shocks? These bikes are more similar than different but the FX sport 5 is full carbon (instead of just the fork). Seems to me that the Specialized might actually be a better fit, bit more upright but the extra 500 dollars for the Trek seems to be a great deal considering the full carbon and GRX groupset. I hope to take these bikes on singletrack of the easiest type for perhaps 10-20 percent of their riding.
Last edited by Flipper_; 07-14-22 at 02:58 PM.
07-22-22, 10:20 AM
#2
Newbie
Thread Starter
Ok, so, to make a long story short and assuming that both of them would be quick and comfortable on rail trails, etc, which would be better for very light singletrack?
- The Trek FX Sport 5 with it's full Carbon Frame
- The Specialized Sirrus 4.0 with it's 20mm of handlebar suspension
07-27-22, 08:07 AM
#3
Newbie
I would look at the Marin DSX 2. It's a 1x12 (10-51) with a 42T chainring. The geometry is better (more aggressive) on this bike for gravel and especially for single track. Wider tire clearance (up to 55mm). The bike cost less, leaving you with more cash to customize accessories and components to your liking. You can even add a dropper post.
07-27-22, 08:27 AM
#4
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Carbon... does not mean that it may be potentially "compliant" the way you're thinking. The stiffest bikes I have ever ridden were Carbon.
I had a Trek FX 7.3 last year. Loved it. The long chainstays and comfy upright riding position felt nice while still being decently fast. I eventually outgrew its performance after a few months of riding and eventually moved on to a true performance drop bar bike. I recommend to buy used if going the hybrid route, with the intention of eventually upping the performance for real.
I had a Trek FX 7.3 last year. Loved it. The long chainstays and comfy upright riding position felt nice while still being decently fast. I eventually outgrew its performance after a few months of riding and eventually moved on to a true performance drop bar bike. I recommend to buy used if going the hybrid route, with the intention of eventually upping the performance for real.
07-27-22, 04:16 PM
#5
Senior Member
Carbon... does not mean that it may be potentially "compliant" the way you're thinking. The stiffest bikes I have ever ridden were Carbon.
I had a Trek FX 7.3 last year. Loved it. The long chainstays and comfy upright riding position felt nice while still being decently fast. I eventually outgrew its performance after a few months of riding and eventually moved on to a true performance drop bar bike. I recommend to buy used if going the hybrid route, with the intention of eventually upping the performance for real.
I had a Trek FX 7.3 last year. Loved it. The long chainstays and comfy upright riding position felt nice while still being decently fast. I eventually outgrew its performance after a few months of riding and eventually moved on to a true performance drop bar bike. I recommend to buy used if going the hybrid route, with the intention of eventually upping the performance for real.
10-24-22, 11:22 AM
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I've been narrowing things down lately and really think that the Sirrux X is what I want. I need to bump up the speed and intensity for some rides from the Comfort bike I already have, want something that can venture on to the lightest well groomed singletrack and not turn into a **** show but it's main focus will be limestone/rail trails of mixed to good quality, spinning it out. Both of these run 38/40 tires, it appears that the Trek is the better value if you consider Carbon to be a weight and compliance advantage but the future shock handlebar suspension is intriguing and I think it could make a big difference as the roughness increases.
Highlights:
Sirrus X 4.0- 20mm handlebar suspension, carbon fork, Deore 1X11 drivetrain with close spaced ratios
Trek FX Sport 5- Full carbon, partial GRX (Crank/Derailleur) 1X11 drivetrain with close spaced ratios
Want:
Hybrid style because it's harder
Compliance for days but no front suspension fork
Fat tires
Light weight but anything in the 24 Lb and lower areas should be fine
Do we like Trek Carbon these days? Do we like future shock 1.5? Is Future shock 1.5 as maintenance intensive as cheap coil shocks? These bikes are more similar than different but the FX sport 5 is full carbon (instead of just the fork). Seems to me that the Specialized might actually be a better fit, bit more upright but the extra 500 dollars for the Trek seems to be a great deal considering the full carbon and GRX groupset. I hope to take these bikes on singletrack of the easiest type for perhaps 10-20 percent of their riding.
Highlights:
Sirrus X 4.0- 20mm handlebar suspension, carbon fork, Deore 1X11 drivetrain with close spaced ratios
Trek FX Sport 5- Full carbon, partial GRX (Crank/Derailleur) 1X11 drivetrain with close spaced ratios
Want:
Hybrid style because it's harder
Compliance for days but no front suspension fork
Fat tires
Light weight but anything in the 24 Lb and lower areas should be fine
Do we like Trek Carbon these days? Do we like future shock 1.5? Is Future shock 1.5 as maintenance intensive as cheap coil shocks? These bikes are more similar than different but the FX sport 5 is full carbon (instead of just the fork). Seems to me that the Specialized might actually be a better fit, bit more upright but the extra 500 dollars for the Trek seems to be a great deal considering the full carbon and GRX groupset. I hope to take these bikes on singletrack of the easiest type for perhaps 10-20 percent of their riding.
10-24-22, 03:10 PM
#7
Newbie
Thread Starter
I actually backed off and decided to buy a motorcycle instead, then got too busy to buy that so I haven't done anything. I also have stopped riding on the groomed limestone trail a few months ago and just hit the root and bump infested MTB trail with my Trek Fuel EX8 instead a couple times a week. I was actually leaning back towards the Trek FX5 Sport for the carbon fiber and the gearing when things went sideways.
01-21-23, 11:31 PM
#8
Full Member
Carbon... does not mean that it may be potentially "compliant" the way you're thinking. The stiffest bikes I have ever ridden were Carbon.
I had a Trek FX 7.3 last year. Loved it. The long chainstays and comfy upright riding position felt nice while still being decently fast. I eventually outgrew its performance after a few months of riding and eventually moved on to a true performance drop bar bike. I recommend to buy used if going the hybrid route, with the intention of eventually upping the performance for real.
I had a Trek FX 7.3 last year. Loved it. The long chainstays and comfy upright riding position felt nice while still being decently fast. I eventually outgrew its performance after a few months of riding and eventually moved on to a true performance drop bar bike. I recommend to buy used if going the hybrid route, with the intention of eventually upping the performance for real.
01-22-23, 01:46 AM
#9
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01-22-23, 06:44 PM
#10
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I have a FX Sport 5 and run Pirelli Cinurato Gravel H 40mm tires on it and it is a very nice ride. It rides very nicely on the road and on hard packed or grass type ground. I also upgrade the seat post to a carbon post to add more comfort.
01-30-23, 06:21 PM
#11
Full Member
It mostly had to do with the frame itself and the way I fit on it (over time, adapting to a more aggressive fit as I continued to change and Improve as a cyclist. Main issue was not grooving with flat bars all that well due to a prior arm injury.. but either way, I was destined to eventually move on to somewhere with shorter chainstays which allowed you to balance yourself with more weight over the front center of the bike (longer stem and drop bars...) Once I put a 130mm stem on the Trek, I felt like I simply grew out the design of that frame
02-07-23, 01:03 PM
#12
Full Member
I beleive in a prior post, you had stated, you/your significant other, had the fx sport 2021, that is road oriented, how do the current and old sport version feel different to you?
02-07-23, 01:32 PM
#13
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This is her bike
Waiting on some hub caps to put on the Aeolus Pro 37's so I can use those wheels. So when I have those wheels on, then I will put a smaller cassette on as I don't have hills to worry about, I think I have a 14-28 or a 12-25 in a box , can't remember which ready to go. Pirelli 40mm tires so super comfy. Oh, and I had a set of Shimano Ultegra Ice rotors, so I put those on, since I don't have my Shimano road bike anymore. I moved everything over to SRAM AXS, which I could use these rotors on it, but figured I will run the SRAM rotors down first.
__________________
Brian | 2023 Trek Domane SLR 7 AXS | 2023 Trek CheckPoint SL 7 AXS | 2016 Trek Emonda ALR | 2022 Trek FX Sport 5
Brian | 2023 Trek Domane SLR 7 AXS | 2023 Trek CheckPoint SL 7 AXS | 2016 Trek Emonda ALR | 2022 Trek FX Sport 5
Last edited by jaxgtr; 02-07-23 at 04:09 PM.
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02-20-23, 11:05 AM
#16
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LOL... Did not even thing about that. Good eye.
12-26-23, 04:33 PM
#17
Full Member
Carbon... does not mean that it may be potentially "compliant" the way you're thinking. The stiffest bikes I have ever ridden were Carbon.
I had a Trek FX 7.3 last year. Loved it. The long chainstays and comfy upright riding position felt nice while still being decently fast. I eventually outgrew its performance after a few months of riding and eventually moved on to a true performance drop bar bike. I recommend to buy used if going the hybrid route, with the intention of eventually upping the performance for real.
I had a Trek FX 7.3 last year. Loved it. The long chainstays and comfy upright riding position felt nice while still being decently fast. I eventually outgrew its performance after a few months of riding and eventually moved on to a true performance drop bar bike. I recommend to buy used if going the hybrid route, with the intention of eventually upping the performance for real.
12-27-23, 08:45 AM
#18
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I'm keeping mine though, it is a good all-weather/terrain bike and on nice days I'll take my "performance" bike.
