2021 yz250 build

dan_127

Posts

Joined

7/10/2021

Location

Springville, AL, USA

dan_127 4/20/2022 - 9:23pm

4/20/2022 - 9:23pm Edited Date/Time 4/23/2022 11:29am

Hey guys, figured I would throw this in the mix, took my 21yz and started the process. Bought the bike last year to do some riding and build up, figure I’m about half way done with it, this build will be interrupted by riding season though.

Here’s the list:
Fmf fatty and powercore 2.1
Boyesen rad valve 2
Polisport plastics
Decal Works custom kit with custom seat cover and # plates
Twin air filter
Boyesen ignition cover
Hinson billetproof clutch
Full rebuild with some trickery (stock displacement, ported polished, squish fix, crank mod, power valve mod, etc.)
Renthal sprockets and chain
Suspension revalve
Ride Engineering hard parts
Boyesen super cooler
Twinair 2.0 bar rad cap with ice flow coolant
Motohose silicone rad hose kit and carb line kit
streamline brakes
Polisport case guards
Mettech Titanium bolt kit
Rejetted carb
Zeta aluminum chain guard and case saver
Rad braces
Fork bleeders
Lower fork guards
New hour meter
Pro taper aluminum throttle tube
ODI emig grips
Acerbis hand guards

Coming soon:
Kashima coating forks and shock
CMT Compositi Carbon fiber gas tank
Ride engineering triple tree
Neken bars
Asv levers
Dubya built wheel set with kite hubs and excel signature rims
Ride engineering braided brake lines
Flo motor sports titanium pegs
Hammerhead foot controls
Lightspeed carbon fiber skid plate, chain guide, caliper guard
Ride engineering billet calipers
FCP titanium footpeg pins
FCP titanium engine mounts(medium)

The supply chain issues continue to plague me but I’ve made it through the top so far. Let me know your thoughts

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NLMB150

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194

Joined

2/3/2022

Location

Dying out west, TX, USA

NLMB150 4/23/2022 11:30am

4/23/2022 11:30am

Could you tell a difference with the fcp engine mounts? Been look at them but haven’t heard any reviews, anyways. Sickkk bike

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dan_127

Posts

Joined

7/10/2021

Location

Springville, AL, USA

dan_127 4/23/2022 11:58am

4/23/2022 11:58am

NLMB150 wrote:

Could you tell a difference with the fcp engine mounts? Been look at them but haven’t heard any reviews, anyways. Sickkk bike

I don’t have them in this YZ yet, but I do have a long history with using them. If you’re considering them I would recommend understanding what you’re looking to gain. Stiffer will offer more precision and tight handling, where adding more flex offers a smoother ride. I wouldn’t recommend changing anything with your mounts until you have your suspension properly set up for yourself. Suspension is much more noticeable and bang for your buck improvement. You can see what your preference is with your stock mounts by adjusting your torque (loosen up about 10% less than what the rating is). That will give you a slight idea of what a softer mount will feel like. I feel like the 21 YZ250 has a stiffer mount to better compensate for sluggish handling, but I was able to gain all of my precision through suspension and axle spacing so going to the medium will offer a bit smoother ride that will reduce some of the vibrations the 2stroke puts out and cut down on a little arm pump.