Here's the list of mods for my 2017 ST120LE on a 2014 YZ450f:
links to everything below
MUST HAVE'S
- Heavier Fork Springs (0.62) , 15-20w oil in both chambers
- Thermobob/Avid Radiator Bypass (with temp gauge)
- Engine jacket (PST is what I used, there are many)
EVERYTHING ELSE on my bike
- Fastway Footpegs
- Drifter's Products brake and kit covers
- DEI wrapped exhaust 1"x20' w/ DEI silicone spray
- IceAge Nitrous Kit
- IceAge Helious Headlight and mount
- Powermad Handguards

THERE ARE A FEW OPTIONS FOR INTAKE SETUP ON YZ'S AS WELL AS OTHER BIKES. I went with a 2.5" clamp-on pod filter from UNI ([ Ссылка ]), an Outerwears Filter cover from them that would fit ([ Ссылка ]) and a 2"x2.5" 45 degree silicone tube clamped right to the throttle body. I will then use Frogzskin (www.frogzskin.com) to cover the areas of intake and such.

Links:
www.timbersled.com
www.race-tech.com (call them for springs, there are a bunch of guys offering springs, most don't show snowbike specific on their websites)
[ Ссылка ] (radiator bypass)
[ Ссылка ] (another option for radiator bypass)
[ Ссылка ] (engine jacket)
[ Ссылка ] (nitrous and headlight)
[ Ссылка ] (exhaust wrap - 1"x20' w/ silicone spray)
[ Ссылка ] (Powermadd Handguards)
- Just google Fastway Evolution III footpegs and you'll find them, there are many other bigger options too but the few rides I've had with these so far have proven awesome. Snow doesn't build up on them.
[ Ссылка ] (kit cover and engine jackets too)

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