Tuning Your Fo rk
RockShox (JUDY T2) forks can be tuned to your particular weight, riding style,and terrain. Our forks are set up
or the 140 to 180lb (65 to 80kg), all-around rider who spends equal time riding every off-road terrain
imaginable. Because you're probably not that rider, you can benefit by making tuning adjustments to suit
our specific needs.For maximum tuning flexibility,T2 Spring Tuning Kits and T2 Spring Rate Adjuster Kits are
vailable.
When tuning suspension,always make one change at a time and write it down. Keeping a record lets you
now what changes you have tried and suggests what changes you might try. Ask a shop or local riders what
they have found works well. These resources are typically your best bet, but don't hesitate to call RockShox
about specific tuning needs. A list of phone numbers is on Page 15.
R
H
S
IDE
EIGHT AND
udy T2 is designed to compress (sag) when you are sitting on the bike. This sag allows the front wheel to stay
in contact with the ground when braking and cornering over rough and uneven terrain. The optimum settings
are 5 to 8mm sag for 63mm travel and 7 to 10mm for 80mm travel.
hanging the preload alters the sag and firmness of the initial fork movement.To measure sag,install a zip tie
on the upper tube so that it is flush against the Resi-wiper seal;sit on the bike with normal riding apparel;
then step off your bike and measure the bottom of the zip tie to the top of the wiper. This measurement is the
amount of sag. For example,heavier more aggressive riders need more spring preload to maintain proper ride
height and allow more of the fork's travel to be used during bump impac t.
o Change Preload: The top cap adjustment knob on each leg adjusts the sag of the fork (the preload on the
spring stack). When the adjustment knobs are turned full clockwise, the fork will sag the least and be the
firmest. Turning the adjustment knobs full counterclockwise makes the fork sag the most and be the softest.
: DO NOT
P
A
MPORTANT
TURNTHE
RELOAD
DJUSTERS PASTTHEIR LIMIT STOPS
. F
FROMMINIMUM TO MAXIMUMPRELOAD
AILURE TO OBSERVETHISINSTRUCTION COULDRESULT INPREMATURE FAILUREOFTHE
.
PRELOADADJUSTER CAPASSEMBLY
Q
T
: R
UICK
IP
IGHTANDLEFTSIDEISDETERMINEDWHENSTRADDLINGTHEBICYCLEFRAME FACINGFORWARD
B
S
ASIC
PRING
o insure that you are getting the benefit of all available travel,your fork should occasionally hit the end of it's
travel (bottom out). If you are bottoming out too often or not using all the available travel then the overall
spring rate should be changed.
here are two coil springs and two spring rate adjusters in the Judy T2 that can be interchanged. For example,
aggressive riders may want to increase their spring rate over those recommended and can do so by changing
out the springs and spring rate adjusters provided in the fork with those that better meet their needs.
he coil springs modify the fork for small bump performance. For example, softer springs will improve the
small bump performance for lighter riders. The spring rate adjusters modify the fork for large bump
P
A
PRING
RELOAD
DJUSTMENT
. T
HEREARE APPROXIMATELY
T
G
UNING
UIDE
performance. In this case the grey or firm spring rate adjuster provides more resistance to large bumps and
prevents bottom out for heavier or more aggressive riders.
The table below indicates rider weight and the recommended coil spring kits for those weights.
D
O THEFOLLOWING TO CHANGETHE
IMPORTANT: THE SPRING RATE ADJUSTERS MUST BE THE SAME IN EACH LEG.
1. Unscrew the top cap assembly using a 22 or 24mm wrench or socket.
2. Remove the spring stack assembly (top cap, coil spring,spring rate adjuster,spacer and MCU). See Fig.2.
3. Remove the MCU spacer from the spring rate adjuster, coil spring and top cap.
4. Unsnap the spring rate adjuster from the spacer. By using a softer or firmer spring rate adjuster than
stock,you can change the overall spring rate.
5. Snap the appropriate spring rate adjuster into each coil spring.
6. Clean and grease the MCU and reassemble the spring stack.
7. Install the spring stack assemblies into the upper tubes,starting top cap threads by hand.
8. Tighten the top cap until it is flush with the upper tube.Torque top caps to 30 or 40 IN-LB. After riding
you may need to adjust the top cap knobs to obtain the same sag/pre-load feel.
5
FULL TURNS
As long as moving parts are exposed to the elements, moisture and contamination can reduce performance
Judy T2 forks are designed to be easy to maintain. To maintain high performance,safety,and long life,periodic
maintenance is required. RockShox forks are engineered for easy service to help you keep the fork clean,
greased, and performing like new. Performing maintenance more often is necessary if you ride in extreme
conditions. The recommended tools and intervals for maintenance are listed below.
IMPORTANT: A
•
•
•
•
Rider Weight
Coil Spring Kit
Under 140
Extra Soft
140 to 160
Soft
160 to 180
Medium
Above 180
Firm
T2
:
COILSPRINGS
Ma i nte n a n ce
LWAYS WEARSAFET Y GLASSESWHEN WORKINGON
M
AINTENANCE
5,6 and 8mm hex wrenches
8mm open-end wrench
Small tip internal snap ring pliers
Plastic face mallet
Fig.2
R
S
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OCK
HOX FORKS
T
OOLS