MAINTENANCE SCHEDULE
Maintenance frequency may vary depending on the number of hours the
shock is ridden and the condition under which it is ridden. Heat, violent
impacts, dust, mud, and adjustment settings are all factors that need to
be taken into consideration in determining the frequency of basic maintenance and oil changes.
AFTER EACH
USE
Clean under
the bottom-
out bumper
Clean shock
absorber
exterior
Check shaft
for damage
or rust
Check seal
head for leaks
or loosening
Check nuts for
loosening
Check DU
bushings
Check spring Inspect Inspect Inspect
Change oil,
piston and
wearband,
clean interior
parts, check
nitrogen
Yes Yes Yes
Yes Yes Yes
Inspect Inspect Inspect
Inspect Inspect/Replace Replace
Inspect Inspect Inspect
Inspect Inspect Inspect
END OF EACH
SEASON
Recommended
ANNUALLY
OWNER’S
MANUAL
IMPORTANT NOTE:
NOTE: MRP RECOMMENDS SENDING YOUR SHOCK EXCLUSIVELY TO MRP
OR A RECOMMENDED SERVICE CENTER FOR ALL YOUR OIL CHANGE AND
SEAL REPLACEMENT MAINTENANCE.
MORE TUNING INFORMATION AT
Congratulations on your purchase of another cutting-edge
suspension product from MRP! Please read this manual completely
before you ride. It will help you to set your shock for optimum
performance.
IMPORTANT CONSUMER SAFETY INFORMATION
WARNING: RIDING A BIKE IS DANGEROUS. NOT
PROPERLY MAINTAINING OR INSPECTING YOUR BIKE
AND ITS COMPONENTS IS EVEN MORE DANGEROUS. IT
IS ALSO DANGEROUS TO NOT READ AND FOLLOW THESE
INSTRUCTIONS.
Thank you for choosing MRP. This owner’s manual is your
reference guide to using and fine-tuning your shock absorber for
optimum suspension performance and comfort. It also provides important
information about the proper maintenance of your shock. Carefully read
this manual before installing your shock. If you need further assistance,
our experienced team is able to advise and assist you to find the exact
set up to meet your personal needs.
The shock is an important part of your mountain bike and
this owner’s manual explains how to install and use it properly. We
recommend that it be installed by a qualified bicycle mechanic.
Improperly installed shocks might cause serious harm to you and may
severely damage your mountain bike. Never take any chances with
your safety. Before installing and using your new shock, carefully read
this owner’s manual to learn the correct installation and adjustment
procedures and avoid the consequences of an incorrect installation or
improper adjustment.
When your shock requires an oil change or other internal
maintenance, MRP and experienced suspension service centers are best
qualified to provide the necessary service or repairs.
WARRANTY:
MRP suspension products are the highest quality and as such are
warranted to be free from defects in materials and workmanship for a
period of one year from the date of purchase for the original purchaser.
If date of purchase cannot be verified by product registration or
proof of purchase then the warranty is one year from the date of
manufacture. On receipt of the product by MRP, if it is found to be
defective, MRP will determine replacement or repair of the product at
its sole discretion. MRP shall not be liable for any indirect, special or
consequential damages. Warranty does not apply to any product that
has been installed improperly or adjusted using methods not outlined
travel upon impacts or repetitive bumps, add more resistance by turning
the adjuster one click at a time until you bottom out only once in a while
upon major impacts.
INCREASING HIGH-SPEED COMPRESSION (MORE RESISTANCE
BEFORE BLOWING OFF)
To increase the high-speed compression threshold, thus increasing the level of force to activate the blow-off valve, turn the black highspeed compression adjuster knob clockwise (screw in). There are 22
clicks of high-speed compression adjustment. When the high-speed
setting gets too hard, the shock absorber will not be able to effectively
absorb impacts, thus making the ride harsh.
REDUCING HIGH-SPEED COMPRESSION (LESS RESISTANCE
BEFORE BLOWING OFF)
To reduce the high-speed compression thresholds, thus decreasing the level of force to activate the blow-off valve, turn the black highspeed compression adjuster knob counterclockwise (unscrew). When
the high-speed setting gets too soft, the suspension will use more travel
upon impacts and become more prone to bottoming out.
The goal is to run as little high-speed compression as possible to
have a plush and comfortable ride without bottoming out.
IMPORTANT NOTE:
WHEN TURNING THE HIGH-SPEED COMPRESSION ADJUSTMENT KNOB,
THE LOW-SPEED COMPRESSION ADJUSTMENT KNOB WILL FOLLOW ALONG
WITHOUT AFFECTING ITS SETTING.
CLEANING PROCEDURES
A well-maintained shock absorber will last longer and perform
better. For cleaning, use a gentle detergent and pay attention to areas
where debris can become lodged. Do not use any abrasive cleaning
products or high pressure washers.
CLEANING PROCEDURES:
1. Clean the threads under the preload ring using a soft brush
2. Clean around the rebound knob so that no foreign particles damage
the adjustment mechanism.
3. Clean around the compression adjustment knobs delicately, be careful not to force water within the mechanism.
4. Use compressed air to clean beneath the bottom out bumper.
IMPORTANT NOTE:
DO NOT USE COMPRESSED AIR OR HIGH PRESSURE WATER WHEN
CLEANING THE SEAL HEAD AS THIS COULD POSSIBLY DAMAGE THE SEALS.
plush and comfortable or
firm and fast rolling.
You should start
in the middle of the adjustment range. To adjust
properly, turn the adjuster one click at a time
RANGE ADJUSTER LOCATION
and take a test ride. The adjustment is more sensitive towards the fully in
position (slowest). When the low-speed setting gets too hard, the shock
absorber will not be able to absorb low-velocity impacts and weight
transfers, thus making the ride harsher. When the low-speed setting gets
too soft, the shock absorber will be too active, will wallow more under
pedaling and become more prone to bottoming out.
INCREASING LOW-SPEED COMPRESSION DAMPING (STIFFER
SUSPENSION)
To increase the low-speed compression damping, thus making
the suspension stiffer, turn the blue low-speed compression adjuster
knob clockwise (screw in). There are approximately 30 clicks of lowspeed compression adjustment.
REDUCING THE LOW-SPEED DAMPING (SOFTER SUSPENSION)
To reduce the low-speed compression damping, thus making the
suspension softer, turn the blue low-speed compression adjuster counterclockwise (unscrew).
HIGH-SPEED COMPRESSION
The Raze’s high-speed compression circuit is an adjustable
blow-off valve that momentarily relieves the pressure building up inside
the shock upon a harsh impact, instantly providing additional plushness then increasing resistance as needed. The adjustment controls the
level of force (threshold) required to open the blow-off valve upon fast
movements of the shock’s shaft (high velocity) which can be caused by
square-edged impacts, roots, rocks, potholes, vibrations or brake bumps.
When set properly, the high-speed compression circuit allows the wheel
to effectively absorb all impacts without bottoming out or using too much
travel.
Start with the adjustment in the fully open
position (completely
turned counterclockwise)
and take a test ride. If
you tend to bottom out
often or use too much
RANGE ADJUSTER LOCATION
in this manual. Warranty also does not cover products that have been
misused or products that have missing/altered serial numbers. The
product is not warrantied against damage in the appearance of the
product or for modifications not outlined in this manual. This warranty
does not cover breakage, bending, or damage that may result from
crashes, falls, or abuse. Normal wear and tear items such as; seals,
wipers, bushings, stanchion coating, stanchions, piston bands, foam
rings, bottom out and top out bumpers, or damage caused by lack of
proper maintenance as outlined in this manual is not covered by this
warranty.
What to do if you need warranty inspection or service:
1. Go to MRPbike.com and locate the warranty contact form in the
support section of the site. Alternatively, call or email MRP about the
troubles you are having and to set up a RA# (Return Authorization
Number).
2. Carefully pack and ship your product, be sure to insure the package
in case it is lost or damaged in transit. (Only the return shipping to
the customer is covered under warranty)
3. Wait for an email confirming MRP has received your shipment.
DISCLAIMER
BECAUSE MRP SUSPENSION PRODUCTS ARE DESIGNED FOR USE IN
RACING AND EXTREME RIDING CONDITIONS, MRP SUSPENSION CANNOT
GUARANTEE ANY OF ITS SUSPENSION PRODUCTS, OTHER THAN FROM
MANUFACTURING DEFECTS, BECAUSE WE HAVE NO CONTROL OVER
HOW THE PRODUCTS ARE USED AFTER INSTALLATION. IN ADDITION, THE
PURCHASER ASSUMES FULL RESPONSIBILITY TO THE EXTENT LEGALLY
PERMITTED FOR THE RISKS OF PERSONAL INJURY AND/OR DAMAGE TO THE
PURCHASER’S BIKE OR TO ANY THIRD PARTY THAT MAY BE INVOLVED IN AN
INCIDENT WITH THE PURCHASER.
MOUNTING HARDWARE
MRP uses 1/2” (12.7mm) DU bushings on both ends, which
is compatible with the original mounting hardware found on most
recent mountain bikes. Ordering new hardware with your shock is
recommended as this will ensure you have the proper hardware for your
shock and bike. If you contact MRP or your local MRP dealer, we can
verify that you can use the original mounting hardware that came with
your bike.
Before installing your mounting hardware check the direction
the piggy back should face on your frame. This is important so not
to damage your frame also for frames that require different mounting
hardware sizes for each end of the shock. Start with the steel sleeve and
insert it through (the correct side) the bushing in the eyelet and center
it on the eyelet as best as you can. Take the frame spacers and insert
the provided seals into the flanged side of the sleeve. With the seals
installed slide the frame spacers over the sleeve so that the seal rests
against the eyelet of the shock.
SPRING REMOVAL & INSTALLATION
To remove the spring, start by turning the preload adjuster ring
counterclockwise to remove all preload until the spring become loose.
Push down on the spring retainer clip then slide it off the shock, being
careful not to damage the shaft with the sharp sides of the spring clip.
Once the clip is removed, you can slide the spring off the shock.
IMPORTANT NOTE:
ALWAYS MAKE SURE THAT THE END OF THE SPRING’S COIL IS ALIGNED ON
THE OPPOSITE SIDE OF THE SLOT IN THE SPRING RETAINING CLIP. THIS WILL
PREVENT THE SPRING FROM BENDING THE CLIP.
PRELOAD
Spring preload is the compression applied to the shock’s spring
when at rest, using the preload adjuster ring. The preload adjustment is
used to achieve the optimal amount of sag and proper ride height.
INCREASING THE PRELOAD:
To increase the preload on your spring, turn the preload ring
clockwise. Increasing the preload will increase the ride height, thus
reducing the sag. This will result in a more responsive ride. Be careful not
to apply too much preload. This can cause “coil binding”, which is when
the coils of the spring rub against each other under compression. This
can damage the spring, the shock, and can be dangerous for the rider.
REDUCING THE PRELOAD:
To reduce the preload on your spring, turn the preload ring
counter-clockwise. Reducing the preload will decrease the ride height,
thus increasing the sag. This will result in a more comfortable ride. Make
sure to apply enough preload so the spring is firmly held in place and
does not spin freely on the shock.
IMPORTANT NOTE:
IF MORE THAN 5MM OF PRELOAD (5 TURNS) IS NEEDED TO ACHIEVE PROPER
SAG, IT IS RECOMMENDED TO CHANGE TO A HIGHER SPRING RATE. IF SAG
IS NOT ENOUGH WITHOUT ANY PRELOAD APPLIED TO THE SPRING, IT IS
RECOMMENDED TO CHANGE TO A LIGHTER SPRING RATE.
REBOUND
The rebound adjustment controls the speed the shock will return
to its initial extended state after being compressed upon an impact. If the
rebound adjustment is set properly, the rear wheel should keep maximum
traction by tracking the ground without catapulting the rider off the bike.
You should start in the middle of the adjustment range. To adjust
properly, turn the adjuster one click at a time and take a test ride. The
adjustment is more
sensitive towards the
fully in position (slowest).
When the rebound
setting gets too slow, the
shock absorber will not
have time to resume to
its initial position when a
RANGE ADJUSTER LOCATION
series of close bumps is encountered. In this case, the bike will run out
of travel (packing), possibly bottoming out, and may give the impression
of the compression being too soft. When the rebound adjustment is set
too fast, the rear end of the bike will kick and move from side to side after
hitting a series of close bumps and the rider will feel catapulted by the
bike.
INCREASING THE REBOUND DAMPING (SLOWER RETURN):
To increase the rebound damping, thus making the shock return
slower upon an impact, turn the rebound adjuster knob clockwise (screw
in). There are approximately 30 clicks of rebound adjustment.
REDUCING THE REBOUND DAMPING (FASTER RETURN):
To reduce the rebound damping, thus making the shock return
faster upon an impact, turn the rebound adjuster knob counterclockwise
(unscrew).
IMPORTANT NOTE:
MRP’S REBOUND VALVING IS TUNED IN SUCH A WAY THAT IT PROVIDES
MORE DAMPING (SLOWER RETURN) WHEN DEEP WITHIN THE STROKE TO
PREVENT THE RIDER FROM BEING CATAPULTED OFF THE BIKE UPON MAJOR
IMPACTS.
LOW-SPEED COMPRESSION
The low-speed compression adjustment controls the damping
level (resistance) for slow movement of the shock’s shaft (low velocity),
such as under pedaling, when cornering and when preloading the suspension for jumping. The low-speed compression damping level provides
the overall stiffness feeling of the bike’s suspension, making it either
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