Gates Carbon Cord Snowmobile Drive Belt
- 49C4266



Gates Drive Belt
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The new Gates Belt is made of Carbon Cord.

This belt creates much less belt dust and holds RPMs better than the factory belts at a fraction of the cost.

Tech Tip

To ensure optimal operation of newly installed belts, the CVT sheaves must be cleaned of all old belt residue, glazing, and oils. Cleaning can be accomplished by carefully scuffing belt contaminates off the sheave/belt contact area with a mild abrasive such as 220-400grit sandpaper, Scotch Brite Pad, or Steel Wool. Follow up by cleaning the surfaces thoroughly with soapy water and or brake cleaner until all impurities have been removed. Cleaning the sheave surface until all contaminates have been removed is vital to future belt and CVT operation. If any particles remain, belt slip and a noticeable drop in vehicle performance can occur. If a belt is to be removed and reinstalled during future maintenance, it is highly recommended that the belt is reinstalled in the same direction as before to match belt wear profile to contact with the corresponding sheave profile.

Dirty Sheaves should be cleaned with a mild abrasive to remove rubber and other wear contaminates as shown above by dirty Sheave. Dark wear patterns must be removed from the surface then cleaned off with an alcohol agent or brake cleaner to remove fine particulates.

Dirty Sheave Plates
Clean Sheave Plates

New Belt Break In Process: New CVT drive belts require a break-in period of at minimum 30 miles to maximize belt life and performance. The goal of the break-in period is to properly wear in the belt to match the sheaves before applying maximum engine torque. By conservatively running through the entire shift range, proper belt contact over the entire sheave/belt contact path is optimized to eliminate belt slippage and drastically increase the belt’s lifespan.

Follow these guidelines to accomplish proper Belt-Break in:
. Vary vehicle speed and engine RPM to shift belt through normal operational range.
. Do not exceed ¾ throttle within the first 30 miles of installation.
. Stop engine and allow belt to cool down every 15 minutes of use.
During break-in period, the following activities SHOULD BE AVOIDED:
. Aggressive Acceleration or ‘Jerky’ throttle movements at
low speeds.
. Holding engine/vehicle speed constant for extended
time periods.
. Pulling Heavy Loads.
. Long run times without complete CVT/belt cool down.

By following the break-in process carefully, the belt surface will wear in to match the individual CVT sheaves to maximize grip performance and dramatically reduce heat, glazing, and future wear. Although belts are not directionally biased, it is recommended to install them with the label lettering facing toward the user to keep belt reinstallation consistent.

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A DooTalk Member's Test & Results

Been trying to tune a bit and I tried 3 different belts today. (BRP made 391,Carlisle  XS 821 & the Gates Carbon Cord 49C4266). The 391 and XS were broken in well about 50 miles on both, the Gates had been washed and dried, but had no miles on it.
I ran them all on the same track all within an 1.5 hour spand. I made sure the belts were adjusted correctly and I warmed them up for about 5 miles before I made 1500 ' pulls. Machine still has 29% break- in left. Conditions were plowed road with hard pack base and 2" of fresh snow. (Temp 3-5 F)
Here are the results:
Belt          RPM WOT             TOP MPH         notes:
B391 :        7900 RPM          top 106 mph      got to 7900 and stayed, smooth pull, ok back shift
XS 821:       7800 RPM         93 MPH            hard pull to 7800, would blip back to 7700, but mostly stay 7800, not great back shift, probably  got to 7800   

Gates:         7800   RPM        109mph         pulled like an animal to 7800, really "torquey" pull and back shift 
This was really interesting to me, didn't think lower RPM could create the speed. And the difference in the feel with just changing the belts is pretty amazing. The reason I did this is that people I respect told me these were the best belts for trail riding and aggressive pulls on the lake. So I decided to try all of them to figure out what will be my primary and what I will use as a spare.
Just some other data that is at least interesting. I have no issues or allegiance to any belt mfg, just a sledding enthusiast. Anyone else have different experience or comments? This is all relative to tuning my 2015 Ski-Doo 800 X.

Customer Feedback
"So far I have more miles on the Gates Carbon Cord than any other belt I've run on my 14. The Carbon Cord belt is by far the best of any of the others I've run, too. 2 MPH faster, no belt dust, no black rings on the clutches and way-way more consistent RPM than any of the others. Best part is the cost, they can be had for between $70-$75 USD."
"I've found the same thing on the Gates Carbon Cord. It's been very consistent over the 1,500miles so far this year. Very little belt dust and no rings on the clutches." 

Item Number: 49C4266
Price: $106.99