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.
1. DO NOT PERFORM ANY MODIFICATIONS OR ADJUSTMENTS THAT ARE NOT OUTLINED IN THIS
MANUAL.
2. INSPECT YOUR CHAIN GUIDE BEFORE EVERY RIDE. INSPECT AREAS FOR ANY SIGNS OF
EXCESSIVE RUBBING, BENDING, CRACKING OR OTHER DAMAGE. IF YOU NOTICE ANYTHING
ABNORMAL, DO NOT RIDE IT. RETURN IT TO YOUR DEALER OR CONTACT MRP FOR A COMPLETE
INSPECTION AND NECESSARY REPAIR.
3. MRP RECOMMENDS THAT YOU WEAR PROPER SAFETY EQUIPMENT EVERY TIME YOU RIDE,
INCLUDING APPROVED BICYCLE HELMET. NEVER RIDE AT NIGHT WITHOUT LIGHTS.
4. ALWAYS USE GENUINE MRP PARTS. USE OF AFTERMARKET REPLACEMENT PARTS AND
UPGRADES VOIDS THE WARRANTY AND COULD CAUSE STRUCTURAL FAILURE.
MRP HIGHLY RECOMMENDS THAT YOU HAVE YOUR NEW GUIDE INSTALLED BY A PROFESSIONAL
MECHANIC AT YOUR FAVORITE LOCAL BIKE SHOP. IF YOU HAVE ANY DOUBTS ABOUT HOW TO
INSTALL YOUR GUIDE, TAKE IT TO A BIKE SHOP. YOU’LL BE GLAD YOU DID.
COMPATIBILITY
The D-Mount 1x guide is
compatible with most single-
ring specific and three-ring
cranks (with outer and inner ring
removed) and can accommodate
a 49-51mm chainline on standard
mountain bikes and 62.5-64.5mm
chainline on most “fat” bikes.
Used in a single-ring application,
two-ring “double” cranks may
produce a wide chainline
incompatible with the D-Mount
1x. There are several “offset”
chainrings on the market that can
fix this incompatibility.
The D-Mount 1x guide includes
four 1mm spacers that can be
installed on the mounting bolt and
pivot boss between the mounting
plate and guide arm.
1
USER MANUAL
D-MOUNT MODEL
MOUNTING
PLATE
GUIDE
ARM
PIVOT
BOSS
MOUNTING
BOLT
SPACER
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.
1. DO NOT PERFORM ANY MODIFICATIONS OR ADJUSTMENTS THAT ARE NOT OUTLINED IN THIS
MANUAL.
2. INSPECT YOUR CHAIN GUIDE BEFORE EVERY RIDE. INSPECT AREAS FOR ANY SIGNS OF
EXCESSIVE RUBBING, BENDING, CRACKING OR OTHER DAMAGE. IF YOU NOTICE ANYTHING
ABNORMAL, DO NOT RIDE IT. RETURN IT TO YOUR DEALER OR CONTACT MRP FOR A COMPLETE
INSPECTION AND NECESSARY REPAIR.
3. MRP RECOMMENDS THAT YOU WEAR PROPER SAFETY EQUIPMENT EVERY TIME YOU RIDE,
INCLUDING APPROVED BICYCLE HELMET. NEVER RIDE AT NIGHT WITHOUT LIGHTS.
4. ALWAYS USE GENUINE MRP PARTS. USE OF AFTERMARKET REPLACEMENT PARTS AND
UPGRADES VOIDS THE WARRANTY AND COULD CAUSE STRUCTURAL FAILURE.
MRP HIGHLY RECOMMENDS THAT YOU HAVE YOUR NEW GUIDE INSTALLED BY A PROFESSIONAL
MECHANIC AT YOUR FAVORITE LOCAL BIKE SHOP. IF YOU HAVE ANY DOUBTS ABOUT HOW TO
INSTALL YOUR GUIDE, TAKE IT TO A BIKE SHOP. YOU’LL BE GLAD YOU DID.
COMPATIBILITY
The D-Mount 1x guide is
compatible with most single-
ring specific and three-ring
cranks (with outer and inner ring
removed) and can accommodate
a 49-51mm chainline on standard
mountain bikes and 62.5-64.5mm
chainline on most “fat” bikes.
Used in a single-ring application,
two-ring “double” cranks may
produce a wide chainline
incompatible with the D-Mount
1x. There are several “offset”
chainrings on the market that can
fix this incompatibility.
The D-Mount 1x guide includes
four 1mm spacers that can be
installed on the mounting bolt and
pivot boss between the mounting
plate and guide arm.
1
USER MANUAL
D-MOUNT MODEL
MOUNTING
PLATE
GUIDE
ARM
PIVOT
BOSS
MOUNTING
BOLT
SPACER