Rev2 Throttle
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How the Rev2™ Throttle Works
The Rev2™ throttle has several different size reels that will change how much twist is necessary for the throttle to completely open the carbs or throttle bodies on a motorcycle. The larger the reel is, the shorter the twist. Each reel size will shorten the twist by about 10 degrees. If your stock throttle has a 40mm reel and stock twist is 90 degrees (1/4 turn), the 45mm reel will reduce the twist to 80 degrees and the 50mm reel will reduce it to 70 degrees. The 35mm reel will increase the throttle twist to approximately 100 degrees. This is just an example; every model of motorcycle is different.
The included cam reel has a progressive profile that allows the throttle to act like a sensitive, long twist throttle during the initial small throttle openings for precise control and then acts like a more aggressive short twist throttle at large throttle openings, progressively shortening the amount of twist needed to reach full throttle.



The most advanced variable rate throttle in the world
- The second generation of our innovative reel changing system lets you tailor the throttle rate to riding conditions and rider preference
- New ultra compact housing with snap-together elbows make it easy to install and change reels
- Sleek new design requires less handlebar space for lever clearance and throttle position
- Use smaller reels for slower throttle rate and larger reels for faster throttle rate
- Included cam reel provides progressive throttle response preferred by some riders
- Unique reel design allows fast reel changes
- Cable boot keeps dirt and dust out for reliable and smooth operation
- Billet aluminum in-line cable adjusters for easy installation and adjustment
- Lower section of cables use 5 mm housing with PTFE liner for reduced friction, increased routing flexibility and lighter weight
- Upper section of cables use 6 mm housing to provide solid support of adjusters
- Simple to install and maintain
- Designed by Motion Pro
- Patent pending
Kits Include
- Complete Rev2™ Throttle Assembly with throttle tube (MX/Off-road kits Include Titan™ Throttle Tube)
- High quality Motion Pro black vinyl cables (specifically designed for your bike)
- 5 interchangeable reels: 35, 40, 45, 50mm and cam reel (Street/Road: orange or MX/Off-Road: gray)
- Set of Motion Pro Grips (Street/Road Race kit: RoadControl™ grips, MX/Off-road kit: DirtControl™ grips)
- Rev2™ Throttle Equipped decal set
- Printed color instructions
Rev2 Kit Suggested Retail $164.99

Interchangeable Reels
Standard Reels
- Kit includes 4 standard reels: 35 mm (black), 40 mm (blue), 45mm (red), 50mm (yellow)
- Unique reel design allows quick reel changes without readjusting cables
- High wall design keeps cables securely on reel
- Color coded reels for easy identification
- Heavy-duty nylon composite for increased strength and smooth operation
MX/Off-Road Kit (OR Cam)
- Off-road oriented cam profile reel for the Rev2™ Throttle
- Provides progressive throttle roll-on for enhanced throttle control
- Eliminates strong initial hit from modern fuel-injected 4-strokes
Street/Road Race Kit (RR Cam)
- Sportbike oriented cam profile reel for the Rev2™ Throttle
- Profile acts like a slow throttle to 40% opening, them progressively changes to fast profile from 70% to 100% throttle
- Allows rider greater control at lower throttle openings, but acts like racing throttle at higher throttle openings
- Good for all levels of riders, experts will appreciate the greater control at the limit, less experienced riders will like the smooth on/off throttle feeling
Videos
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Grip Glue and Multipurpose Adhesive
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Grease Cards
Use "Search by Vehicle" above for the most up-to-date application listings.
Download an application grease card for a handy quick reference.
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Rev2 Applications
Installation Instructions
This product will allow you to set the amount of throttle twist to suit your style and riding conditions. This throttle kit is meant for off-road and closed course track use ONLY. This kit should only be installed by a professional mechanic and must be installed and maintained in accordance to these instructions to work properly.
Warning: Incorrect installation or maintenance of this product could result in great bodily injury or death. Always refer to a factory service manual in conjunction with these instructions when installing or maintaining this throttle assembly.
Kit includes:
- Rev2™ throttle assembly with throttle tube (MX/Off-Road kits include Titan™ Throttle Tube).
- High-quality Motion Pro Rev2™ cables specifically designed for your bike
- Street/Road Race kits include RoadControl™ grips and MX/Off-Road kits include DirtControl™ grips (shown)
- Standard interchangeable reels: 35mm, 40 mm, 45 mm, 50 mm
- Cam reel: Street/Road Race (orange) or MX/Off-Road (gray)
- Decal set "Rev2 Throttle Equipped"


The throttle consists of a two piece throttle housing, the tube and five included throttle reels (straight rate 35 mm, 40 mm, 45 mm, 50 mm and a progressive cam profile). The throttle reels are designed so that they will only fit in one direction on the throttle tube and the throttle tube has a locating ring to position it in the throttle housing. The throttle housing has a stop built into the recess for the throttle tube locating ring. Always make sure the throttle is properly assembled when installing it. If the components don't fit easily together, something is in the wrong position.
Never mix the components of this kit with any other throttles or cables. This kit is a standalone assembly and any other componentsfrom any other assembly can cause the throttle not to operate or possibly stick or drag, resulting in possible injury or death. Replacement Rev2™ throttle parts and Rev2™ cables are available through your local dealer or Motion Pro. Some motorcycles have the engine kill and starter switches built into the throttlehousing. If this is the case with your motorcycle, you will need to purchase the accessory handlebar switch part # 11-0098 to replace the stock switch assembly. The replacement switch is not included in this kit.
How the Rev2™ Works
The Rev2™ throttle has several different size reels that will change how much twist is necessary for the throttle to completely open the carbs or throttle bodies on a motorcycle.The larger the reel is, the shorter the twist. Each reel size will shorten the twist by about 10 degrees. If your stock throttle has a 40mm reel and stock twist is 90 degrees (1/4 turn), the 45mm reel will reduce the twist to 80 degrees and the 50mm reel will reduce it to 70 degrees. The 35mm reel will increase the throttle twist to approximately 100 degrees.This is just an example; every model of motorcycle is different.The included cam reel has a progressive profile that allows the throttle to act like a sensitive, long twist throttle during the initial small throttle openings for precise control and then acts like a more aggressive short twist throttle at large throttle openings, progressively shortening the amount of twist needed to reach full throttle.
Use Search by Vehicle above to view your stock reel curve vs. the Rev2 reels.

Installing the Rev2™ Throttle Kit
Step 1
Removing the Stock Throttle and Cables
Consult your factory service manualfor disassemblyprocedures for your particular motorcycle. On most motorcycles, it will be necessary to removethe seat, gas tank and airbox to access the throttle cables on the carbs or the throttle bodies. Some bikes will require additional disassembly. Once you are able to access the cables on the carbs or the throttle bodies, remove the bar end on the throttle side (if there is one), disassemble the throttle housing on the handlebar and remove the housing, the stock throttle tube and the cables. Keep the stock throttle tube handy for use later in the installation. Make note of how the stock throttle cables are routed and then remove the stock cables from the carbs or throttle bodies.
Step 2
Installing the Rev2™ Cables
Before installing the new cables, first lubricate the cables using a cable luber (Motion ProP/N 08-0182) and high quality cable lube (Motion Pro P/N 15-0002). The cables are not lubed at the factory, so this is animportant step for best feel and cable life. Install the Rev2™ cables using the same routing as stock and connect them to the carbs or throttle bodies. Make surethat the pull cable is attached to the pull side of the throttle bodies or carbs and thereturn cable to thereturn side. If you reverse them, the throttle will operate backwards. Do not tighten the adjusters all the way on the cable mounts at this time.
Step 3
Installing the Rev2™ Throttle
Measure the diameter of the stock reel (refer to the illustration for the proper method to measure the diameter of the reel on your stock tube). Then selecta Rev2™ reel from the kit that is closest in size to your stock reel, a largerdiameter if you wantto have a faster turning throttle, or a little smallerdiameter if you would like a slightly slower turning throttle and install it on the Rev2™ throttle tube.
WARNING: Always select the closest size first. NEVER install the largest reel right away. Making a major change in how your throttle operates could result in loss of control of your bike and serious injury or death. Always work one size at a time and ride the bike long enough to get used to how the throttle operates before making another change.
Make sure the Rev2™ tube flange fits inside the recess on the Rev2™ reel. Install the throttle tube on the handlebar. Use some high quality grease on the barrels of the Rev2™ cables and fit the push and pull cables into the Rev2™ reel. The cable wires will wrap around thereel and attach to the reel on the opposite side from the cable elbows. The pull cable barrel hole will fit very closely to the barrel, while the return barrel hole in the reel is slightly oval. Use a small amount of grease on the outside diameter of the reel as well, where the cable wires ride. Install the two halves of the throttle housing around the throttle tube, reel and cable elbows. The housing halves should fit snugly together and the throttle should operate smoothly. If not, double-check to make sure the elbows are snapped together and alignedcorrectly and that the wires are routed properly on the outside of the reel. Once everything is fit correctly, install the two housing screws and tighten them evenly to clamp the housing on the handlebar. Do not exceed 90 kg/cm torque (78 lb/in or 6 lb/ft) on the housingscrews. At this time, the cables will still be slightly loose, but the throttle should operate smoothly and snap back quickly to the closed position.
Step 4
Cable Adjustments
The aluminum inline adjusters on the cable housing near the throttle should be closed all the way before starting this step. Some motorcycles have threaded adjusters on the throttlebody or carb cable mounts. If so, this is where you will start. If there are only slip-on fittings at the carb or throttle bodies, the adjustments will be made at the inline adjustersonly. Start with the pull cable and adjust the adjuster until there is approxi- mately 1-2mm of free play in the cable. The throttle should be able to rotate a few degrees before startingto open the carbs or throttle bodies. Once this adjustment is complete, twist the throttle andlet go several times. The throttle should snap back closed very quickly. If it does not, double check all of your previous work to determine the problem. DO NOT continue until the throttle snapsback quickly on its own once released. Adjust the return cable after the pull cable is adjusted. The return cable should have 2-3mm of freeplay. If you are able to access the exposed wire of the return cable at the carbs orthrottle bodies, you should be able to deflect it fromstraight by a millimeter or so if it is adjusted properly. Open the throttle and release again and it should snap back as quickly asbefore. If not, the return cable is too tight. Adjust and operate the throttle again, until it snaps back quickly.
Step 5:
Install the Grips
Install grips using grip glue. Make sure that the throttle side grip does not contact the throttle housing, which will cause drag. Reinstall any barends that may have been on the handlebars and test the throttle again to make sure the grip does not drag on the bar end and the throttle still snaps back quickly.
Step 6:
Reassemble the Rest of the Bike
Reassemble the airbox, gas tank, seat and anything else that was removed when you started. Make sure to make all the proper hose andelectrical connections, while referring to the factory service manual for details.
Step 7:
Stationary Idle Testing
With the bike on its side stand, or a paddock stand turn the bars all the way left and all the way right. While doing this, check that the cablesare not pulled too tight and that they are routed properly. Check the throttle operation at full left and then again at full right to make sure thatit does not drag and that there is some free play. Without turning the throttle, start the motorcycle. It should start and idle normally. If the idle is very high, something was not adjusted properly or was not assembled correctly. Turn off the motorcycle and recheck your work.If the idle is normal, turn the handlebars from full left to full right with the engine running. The idle should not change. If the idle rises when the bars are turned, there is not enough free play in the cables. Readjust the cables to allow more free play and repeat until the idleis steady no matter where the bars are turned. Then twist the throttle to raise the engine speed above idle and release the throttle. The engine should return quickly to a normal idle. After installation of the Revolver throttle and any switches on the handlebar, test the brakelever to make sure that it has adequate travel without contacting the throttle or switch housing. Some motorcycles have adjustable span brake levers, that when set at the closest position to accommodate someone with small hands may contact the throttle or switch housing before full brake pressure is applied. If this is the case, move or rotate the throttle and/ or switch housing concerned to provide proper clearance. When testing the motorcycle for the first time, pay close attention to brake function to make sure they are 100% functional. Ifthere is a problem, do not operate the motorcycle further until proper brake lever clearance is obtained.
WARNING: Failure to install this kit properly could cause great bodily injury or death.
Step 8:
The Test Ride
The best place for a test ride is at a closed course racetrack. Make sure to ride the bike for sufficient time at low speeds and under no more than moderate acceleration to get a good feel for the different throttle response before going back to normal use of your motorcycle.
Changing Reels
The Rev2™ throttle is designed so that you can easily change reels of the throttle to adapt to different riding situations. A fast turning throttle can be used for high-speed tracks and a slower turning throttle for more technical riding where greater control of the throttle is necessary.To change reels, all that is necessary is to remove the throttle housing, unhook the cables from the throttle reel and remove the reel from the tube and replace it with the size desired. Assembly is the reverse. A slight cable adjustment might be necessary (see step 4).
Maintaining the Rev2™ Throttle
There is not much to maintaining the Rev2™ throttle, but like all of your controls, it will benefit from regular preventative maintenance. Before each ride, you should do a quick cable check to make sure cable slack is correct and the throttlealways snaps back quickly. Once or twice a year, the throttle should be disassembled, cleaned and lubricated, including lubricating the cables. Give the cables and throttle a visual inspection for any wear, cracks or other signs of wear ordamage. Always immediately replace any component that is worn.










Rev2 Throttle Kit Installation Instructions 382 KB .pdf file
Warranty
The Rev2™ throttle kit carries a one-year limited warranty against defects in materials or workmanship only. This guarantee is limited to repair or replacement only. Repair or replacement is subject to Motion Pro determining that the productis defective and that it was not subject to abuse or misuse and that it was properly installed and maintained. The above is the customer's exclusive remedy. This warranty is expressly in lieu of all other warranties express or implied and of allother obligations or liabilities. In no event shall Motion Pro, Inc. be liable for any incidental or consequential damages arising from the breach of any warranties, improper installation, or any other breach of contract or duty. To make a warranty claim contact:
Motion Pro Warranty Department at 650-594-9600 to get an RGA number before returning product.