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2025 CF Moto U10 Shift-Tek Ultimate Clutch Kit — Install Guide

CFMOTO · 2025 CFMOTO · SKU 402FP0122 (Weights Only), 402FP0124(Ultimate Kit)

What's in the Box

CFMOTO CFMOTO kit contents
Included parts
40-45 Helix Assembly
Shift-Tek Weight Kit
Blue/Purple Primary Spring
White/Green Secondary Spring
CF Moto U10 Pro
Stock Stage 1
Horsepower
(Crank)
Primary Spring Stock Blue/Pur
Engagement 1900 2000
RPM
Operating RPM 6400 720
Hole 1 N/A 2 M
Hole 2 N/A 2 M
Hole 3 N/A 2 M
Hole 4 N/A 3 M
Assembled 86.4g 75
Weight in Grams
Secondary Stock White/Gr
Spring
Helix Stock 40-45
Hole on Helix Hole 1 Hole 4
Cap
Spring Hole in B B
Sheave
1 2 3
4
Required tools
8, 10, 18, 19, 22mm Sockets
Screwdriver
Clutch Puller
Impact Driver
6mm Allen Socket
Torque Wrench
-91
ple
0
ag
ag
ag
ag
g
een

Installation

1
Remove the outer clutch cover, (13) 10mm screws with washers. Remove the primary clutch bolt (22mm) and sleeved washer.
2
Install the primary clutch puller, thread in by hand until it bottoms out. Use a impact and a 19mm socket.
CFMOTO CFMOTO installation
3
Install the primary clutch into a clutch compressor tool. With a sharpie mark a line from the cover to the spider. No need to compress the clutch at this time, just hold the cover and primary spring in place. Remove the (6) 10mm screws holding the clutch cover on.
4
Slowly release the spring tension. Remove clutch cover and spring from the clutch.
CFMOTO CFMOTO installation
5
Slide the moveable sheave down to access more room for removing the weight. With a 8mm socket and M5 Allen socket, remove the pin. Once the pin is removed, slide the weight and 2 washers out.
6
Check the setup sheet above. Set your weights up accordingly. EVP weights have built in bushings, you no longer need to install the OEM tan ones.
CFMOTO CFMOTO installation
7
Install the weight into the clutch, reinstall the pin and locknut.
8
Install the new primary spring (blue with purple stripe) into the spring cup.
CFMOTO CFMOTO installation
9
Line up the sharpie marks from the cover and spider. Compress the spring and cover down to the clutch towers. Reinstall the clutch cover 10mm screws with blue Loctite. Torque to 12 ft-lb.
10
Before installing the primary clutch onto the crankshaft, it is best to clean the post and crankshaft with brake cleaner and a rag. Install the primary clutch with washer and bolt. OEM torque to 52 ft-lb. EVP bolt torque to 80 ft-lb.
CFMOTO CFMOTO installation
11
Remove the secondary clutch bolt with belt changing washer. Use a 18mm socket.
12
With the secondary clutch on the bench. Mark both sheaves with a sharpie. Flip the clutch over, remove the (3) 10mm screws holding the sheaves together.
CFMOTO CFMOTO installation
13
You can split the sheaves now.
14
Install the stationary sheave in a clutch compression tool, with the helix facing upward.
CFMOTO CFMOTO installation
15
Compress the spring and helix down just enough to remove tension off of the snap ring.
16
With a snap ring tool, expand the ring and place it on top of the shaft. You can now decompress the secondary spring.
CFMOTO CFMOTO installation
17
Inspect your sliders, if worn now is a good time to replace. Located inside the spring cup are (3) different pockets A, B, C. We will be installing the EVP spring into B.
18
Install the other spring tang into hole 4 on the EVP helix.
CFMOTO CFMOTO installation
19
The helix should be sitting halfway over the slider as shown below.
20
When you start compressing the spring and helix down, turn the helix clockwise to pass the sliders. This will apply torsion to the spring.
CFMOTO CFMOTO installation
21
Compress the spring and helix down until the helix passes the snap ring groove. Reinstall the snap ring, making sure all sides are in. You can release the pressure from the tool.
22
Reinstall the sheaves together. Make sure the sharpie lines are close to lining up. The new helix is slightly different so the moveable sheave will turn slightly more.
CFMOTO CFMOTO installation
23
Reinstall the secondary clutch onto the vehicle. Torque the bolt to 52 ft-lb. Reinstall the drive belt. Spin the secondary 5 revolutions to properly seat the drive belt.
CFMOTO CFMOTO installation
CFMOTO CFMOTO installation
CFMOTO CFMOTO installation