INSTALLATION GUIDE

Congratulations, you've purchased your very own piece of oversized cycling history - Muc-Off's rule-book-ripping Lightweight Oversized Pulley Wheel System (L.O.P.S).

READ THE INNOVATION STORY

In a sport known for its marginal gains, very rarely do we see major leaps forward in tech. That was until Project Landa was conceived.

The project ambitiously set out to improve gear shifting capabilities for one of cycling’s biggest names – Mikel Landa. Over the following 12-months, Muc-Off worked tirelessly with the UCI WorldTour cycling team Bahrain McLaren, to develop a product fit to perform on cycling’s biggest stage – the 2020 Tour de France. Specifically, stage 20, a 36.2KM individual time trial from Lura to La Planche Des Belles Filles.

There was a need for a stiffer oversized system, but obviously weight had to be kept to a minimum, meaning material selection was key. The system is longer than others, which gives an optimised chain angle for better shifting performance. Each time the system engages or disengages the pulley wheels, less friction is produced – and less friction means more speed.

L.O.P.S is made from titanium, so despite being 8mm longer than stock Shimano, it weighs 9% less than the CeramicSpeed OSPW System. The titanium also means this ground-breaking design is the stiffest cage around – over 6.5% stiffer than stock Shimano and 2.7% stiffer than CeramicSpeed, which results in a significantly more precise shift.

f the engineering challenges weren’t enough, the world threw down its own gauntlet in the form of COVID-19. During the UK lockdown, everything required to work on the L.O.P.S system had to be sent to a barn in rural North Dorset. From here, Muc-Off’s head of R&D worked day and night in isolation throughout the pandemic’s early stages, to meet the non-negotiable deadline of the 2020 Tour’s pivotal, stage 20 time-trial. It had to happen, regardless of the cost, time or effort required. The pandemic couldn’t be allowed to ruin over a year’s work, L.O.P.S simply had to be onto Landa’s bike for that all-important stage.

Against all odds, Muc-Off made it, and now this incredible piece of engineering excellence is ready to be fitted to your bike, so you can shift like the man himself.

The Muc-Off L.O.P.S System has been designed, developed, tested and manufactured in the UK for Shimano Dura-Ace RD9100 and Shimano Dura-Ace RD9150 rear derailleurs. You’ll find a list of instructions in this pack to help with the installation. We recommend that the system should only be fitted by a qualified and experienced professional bicycle mechanic. Be sure to provide your mechanic with these instructions prior to the installation.

You own one of the first fifty L.O.P.S systems ever built, so welcome to a truly unique club. Now, get out there and chase your time-trial dreams, or destroy that Strava segment. With the world’s most advanced shifting system on your bike, the road is yours.

WARRANTY INFORMATION

The Muc-Off product is covered under warranty by Muc-Off to be free of defective parts and materials for a period of 12 months from the date of purchase (or as otherwise stated at point of sale) providing the product is used for normal domestic duties. All warranty periods commence on the date of purchase and are none transferable. This warranty shall not apply to defects caused by misuse, neglect, accident, improper storage, installation or handling, repair, wear & tear or alteration not carried out or authorised by us.

Muc-Off recognises the leading threat to bearing failure is corrosion caused through improper care and maintenance. The warranty does not include bearing corrosion. The guarantee is limited to the provision of a refund within the specified period providing the above conditions are met and the original proof of purchase is provided. This warranty applies to products used for domestic use only and shall not apply to any products used for commercial purposes. Muc-Off shall not be liable in any event at any time for any indirect or consequential loss or damage. The rights and benefits under warranty are additional to your statutory rights which are not affected by this warranty.


SETTING UP YOUR L.O.P.S SYSTEM

We’ve supplied you with Muc-Off mechanics gloves in the box. Please put them on before set-up.

GRAB THE FOLLOWING TOOLS:

LET'S GET TO WORK - TAKING BITS OFF


STEP 1. 

Clamp the bicycle securely into a bike stand.

 

STEP 2. 

Drop the chain onto the smallest cog on the rear cassette.

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STEP 3. 

Take the chain off the bike. Using a quality pair of chain link pliers remove the split link from the chain. (If your chain does not have a split link, you’ll need a chain tool.)

STEP 4. 

Remove the rear mech from the bike.

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STEP 5A FOR DI2. 

After removing the rear mech from the bike, hold the back half of the mech in one hand with the other holding the pivot point. Push back (pivot point side) snapping the mech open as if it was in first gear. Carefully hold and rotate down the pulley cage.

Then with a plus positive screwdriver remove (by turning anticlockwise) the pulley cage stop screw. While still holding the cage, very carefully allow the pulley cage spring to unwind as it starts to release the spring tension. At the end the derailleur cage will appear to be upside down.

STEP 5B FOR A CABLE MECH. 

Carefully hold and rotate down the pulley cage. Then with a plus positive screwdriver remove (by turning anticlockwise) the pulley cage stop screw.

While still holding the cage, very carefully allow the pulley cage spring to unwind as it starts to release the spring tension. At the end the derailleur cage will appear to be upside down.

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STEP 6A. 

On the bottom rear of the main body of your Shimano derailleur is a black torque mounting bolt.

STEP 6B. 

Using a T10 Torx screwdriver undo the bolt anticlockwise and remove, but be careful not to round it off as this bolt is very shallow.

The trick here is that there’s not much thread on the bolt, so once you can see about 10mm of thread exposed from the body you can pull it straight out the rest of the body by hand. Make sure to put this somewhere safe as you’ll need it later.

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STEP 7. 

Then take the grip of the derailleur cage and start to pull the part out of the main body, until it completely slides out with a spring and plastic seal spacer.

STEP 8. 

Once this is all removed from the derailleur body hold it in one hand and carefully remove the plastic seal spacer which will slide off over the spring.

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STEP 8A. 

Then you’ll need to remove the spring from its cage. This is hooked into the cage in a small hole, so unhook and remove it.

STEP 8B. 

Both of these parts will be reused when the Muc-Off L.O.P.S System is installed so keep them handy for later.

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LET'S GET TO WORK - INSTALLING THE MUC-OFF L.O.P.S. SYSTEM

NOW YOU’VE TAKEN THE STANDARD SHIMANO CAGE OFF THE BIKE, IT’S TIME TO CRACK ON WITH INSTALLING THE MUC-OFF L.O.P.S SYSTEM.


STEP 9. 

Pick up the Muc-Off L.O.P.S System and apply some grease on the outside of the mounting post. We recommend you use Muc-Off Bio Grease.

STEP 9A. 

Place the original Shimano tension spring over the mounting post.

Just like on the stock set up the hooked end goes on first and should be placed into the top hole upon the Muc-Off L.O.P.S System so it is inserted completely (in the high position).

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STEP 9B. 

There are three different spring tension settings on the Muc-Off L.O.P.S System. You’ll find the top hole is ‘H’ (high) and ‘L’ (low) is at the bottom.

The differences might seem small, but they do make quite a big difference. We advise you use the ‘H’ tension setting as this creates the most tension to give the most accurate shifting and optimum performance.

STEP 10. 

Then take the plastic washer seal and place it over the spring in the same way that it was removed (top hat up) from the original cage. The flat surface should go on first and the small stepped edge needs to face away from the Muc-Off L.O.P.S System body.

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STEP 11. 

It’s time to take the Muc-Off L.O.P.S System and insert the mounting post (with spring and plastic seal washer on) into the Shimano derailleur body that’s on the bike.

STEP 11A. 

It’s super important to align the 90° end of the spring into the recess on the derailleur body first to ensure it goes together correctly. The plastic spacer will rest freely on the spring until aligned at the back of the derailleur body.

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STEP 12. 

Push the Muc-Off L.O.P.S System mounting post into the derailleur body and ensure that the cage rotates smoothly and the spring is properly situated, and the plastic seal washer is also located into the recess.

STEP 13. 

Now onto a very important bit.

With one hand holding the Muc-Off L.O.P.S System, and one hand supporting the Shimano derailleur body, rotate the Muc-Off L.O.P.S System anticlockwise. This is as you are standing to the right of your bike looking at the derailleur.

It will rotate upwards, towards the back of your bike and then downward. Once the Muc-Off L.O.P.S System has been rotated one complete turn the stop tower will go past the stop point (you may need to pull the cage out slightly) on the derailleur and you’ll be able to push them both together.

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STEP 13A. 

This action adds the spring tension to the derailleur and will allow it to function correctly.

STEP 14. 

It’s now really important to keep one hand holding the Muc-Off L.O.P.S System and the derailleur body together so that they don’t separate.

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STEP 14A. 

Then take the original black T10 torque screw that was removed earlier and slide it into the mount hole on the underside of the body.

STEP 14B. 

Push this inwards until about 10mm protrudes and with a T10 Torx tighten clockwise to a torque of 1Nm.

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STEP 15. 

The Muc-Off L.O.P.S System is now ready to be installed back onto the bike. The main bolt that mounts the derailleur onto the bike should be tightened to 8-10Nm.

STEP 16. 

Now would be a great time to stand back and admire its beauty. Maybe take a few photos too.

 

STEP 17. 

Check the upper and lower stops on the derailleur and adjust the limit screws if needed.

 

STEP 18. 

Make sure that the spacing between upper pulley and the top of the cassette is 5mm or less. This distance will depend on many factors such as gear ratios, the bike’s frame and set-up. For the best results use a Shimano Ultegra or Dura-Ace cassette (max 32/11T).

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STEP 19. 

Get the new chain ready to be installed onto the bike.

RECOMMENDED CHAIN LENGTH

53/39 chain rings and 11-(23-32) cassette: 114 links

50/34 chain rings and 11-(23-32) cassette: 112 links

STEP 20. 

The length of the chain will depend on the specific cassette size and chain stay length that’s on the bike. To ensure that Muc-Off L.O.P.S operates with optimal performance using the correct chain length is very important.

If you’re looking for even more marginal gains, we suggest you use our Nanotube Chain Lube.

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STEP 21. 

Put your chain onto the smallest front chain ring. But if you’re running a x1 set up then keep it as is. To get the correct chain length, pull the chain ends together – like when you need to cut a chain to length. The bottom part of the cage will move downwards and away from your cassette, like the image to your left.

STEP 22. 

When you apply tension to the chain and the Muc-Off L.O.P.S System looks to be aligned, the chain needs to be cut and connected by the required number of links in order to achieve enough tension in this gear combination (small chain ring/small cog on the cassette).

It should be one link shorter than Step 21.

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STEP 23. 

Now the chain is cut to length, it’s crucial to test the clearance of the Muc-Off L.O.P.S System, when the rear derailleur is set in the biggest chain ring and the largest cog on the cassette. Like the arrow shows, the cage should be able to turn anticlockwise.

It’s important that there’s some clearance between the upper pulley wheel and the largest cog on the cassette. If there’s not enough clearance, just adjust the B-tension as needed.

STEP 24. 

Once the chain is installed check the gear change and adjust if necessary. Extra cable tension or Di2 trim adjustments for proper alignment between the cogs and pulley wheels may be required.

 

STEP 25. 

Now the bike’s ready to rock.

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