Trek Rail upgrades, what have you done?

Third-Reef

Active member
Apr 1, 2021
96
133
95946
108 tooth free hub upgrade kit. Goes in this week.
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EuanS2

Well-known member
Jan 10, 2021
90
128
Edinburgh
Rail 7 Upgrades so far

Kiox Controller.
Lyrik internals.
170mm air shaft.
Michelin EWilds 2.6.
Rapid drive 108 conversion.
Hope Tech 3 v4/e4 brakes with 220/203 rotors.
Fox Transfer 175 seat post with OneUp leaver.
Ergon saddle and Grips.
OneUp 35mm stem and 35mm rise OneUp carbon bars.
OneUp EDC tools in the stem (2021 version)
Invisiframe.
RRP mudguards.
Custom decals on Fork and wheels.

Some of the most important mods I’ve done are tidying up the cables, stopping them rattling and weather proofing the battery housing and the rear pivot area

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Philly G

Well-known member
Jun 29, 2020
692
517
New Zealand
I notice the lag of engaement in the motor, not really in the rear hub. Is it that noticeable? Seems a cheap upgrade anyway.
It is very noticeable, I would say especially so on an eeb because of the slight lag at the motor. 3 pawls gives 54 points of engagement whereas 6 pawls you have 108. I think from memory this translates to just 3° of freeplay with the 6 pawl upgrade vs 6° with the standard 3 pawls. It doesn't sound like a lot but you'll definitely notice the difference
 

Busterchops

New Member
May 10, 2021
8
3
Colorado
Just ordered the bontrager carbon line pros! Supposedly the fronts are in stock and the rears are 2-4 weeks out. Rears come stock with the 108 hub. Lots of options but but would appreciate some suggestions for tires that match the rims? Mostly riding game trails in the back country of Colorado.
 

Philly G

Well-known member
Jun 29, 2020
692
517
New Zealand
Lots of options but but would appreciate some suggestions for tires that match the rims? Mostly riding game trails in the back country of Colorado.
Everyone has their own preference for tyres, you really have to try a few and see what works best for the terrain you ride. I run Maxxis Assegai front and either Maxxis Dissector or Aggressor rear. Get the heavier Double Down casing, heaps of support even at lower pressures, assuming you're setting up tubeless. The Aggressor is a bit faster rolling and harder wearing than the Dissector, so probably gives you a bit more range, but the Dissector offers better grip on wet roots etc. The Assegai has grip for days and I doubt I'll ever run anything else
 

Smittylube

Member
May 14, 2021
102
62
Santa Cruz
For those running larger than 200 stock brake rotors, Care to share info of where and what you bought?
I know I can now easily run a larger front since I put on the ZEB, but the rear already has a spacer/ adapter. I am thinking anything that helps braking is a good thing. ( stock rail 7 brakes currently)

Also maybe mention if you had issues with warp or fitment along the way.
Thanks.
Steve
 

Busterchops

New Member
May 10, 2021
8
3
Colorado
Everyone has their own preference for tyres, you really have to try a few and see what works best for the terrain you ride. I run Maxxis Assegai front and either Maxxis Dissector or Aggressor rear. Get the heavier Double Down casing, heaps of support even at lower pressures, assuming you're setting up tubeless. The Aggressor is a bit faster rolling and harder wearing than the Dissector, so probably gives you a bit more range, but the Dissector offers better grip on wet roots etc. The Assegai has grip for days and I doubt I'll ever run anything else
Thanks I’ll definitely take a look.
 

GrandesRoues

Member
Jul 26, 2019
176
89
Alpes Françaises
For those running larger than 200 stock brake rotors, Care to share info of where and what you bought?
I know I can now easily run a larger front since I put on the ZEB, but the rear already has a spacer/ adapter. I am thinking anything that helps braking is a good thing. ( stock rail 7 brakes currently)

Also maybe mention if you had issues with warp or fitment along the way.
Thanks.
Steve

I use Magura, 220mm front and 200mm rear.
I like the consistency on long (>1000m elevation) alpine downhills. They are a fit finicky to bleed and adjust.
 

Rostle32

Member
Sep 26, 2018
85
91
Uk
I upgraded my Rail 7 to the 6 pawl engagement, worked a treat (for a while) then freehub ended up sliding outward on the axle for some reason, this then made the pawl location slots elongate, so new freehub required !!! Then the clutch on the rear mech went dicky, when i was pricing the new parts up and the availability, I decided to go 10 speed !
shimano hg freehub,
11-42 shimano cassette,
shimano hg 10 speed chain,
shimano zee shifter,
deore long cage mech,
cheap and dependable, runs like a dream and climbs all my trails no bother and abundant spares! win , win !!!!
 

Third-Reef

Active member
Apr 1, 2021
96
133
95946
Put a leash on my Kiox. After a rough and rocky decent in the desert I got to the bottom and noticed the screen was blank. The Kiox was knocked sideways a little. Popped it back in and all was well. Must have hit it with my knee on one of the switchbacks. Would have been a big deal if had been gone. It could have popped out and bounced down over the cliff and been gone forever.
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zerofunds

Member
Nov 30, 2020
61
52
New Zealand
Put a leash on my Kiox. After a rough and rocky decent in the desert I got to the bottom and noticed the screen was blank. The Kiox was knocked sideways a little. Popped it back in and all was well. Must have hit it with my knee on one of the switchbacks. Would have been a big deal if had been gone. It could have popped out and bounced down over the cliff and been gone forever.
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Not sure if it works for you, but all you need is a little counter sunk screw to screw the kiosk to the base plate, I think it's M4 from memory, used in a lot of computers etc
 

Richiefromboston

Active member
Mar 15, 2021
228
121
Boston, Ma. USA
I have a 2021 trek rail XT Ive already pulled the SLX brakes and replaced with 4 plug XTR brakes and I pulled the XT deralieur for an XTR Also went with race face next 31's on Vault hubs I wanted a 9.9 but had to settle on the XT which is badass on its own pictures to follow this week I had a little prob with the plugs on motor and would like a new harness( I dont NEED it) because I can fix the wires that pulled out of one the plugs, but after all this $$ and effort Id rather replace it The bike is going cross the USA for 4 months with me So I want it bulletproof.
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