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Royal Enfield Interceptor/Continental  650 belt drive Royal Enfield Interceptor/Continental  650 belt drive Royal Enfield Interceptor/Continental  650 belt drive Royal Enfield Interceptor/Continental  650 belt drive Royal Enfield Interceptor/Continental  650 belt drive Royal Enfield Interceptor/Continental  650 belt drive Royal Enfield Interceptor/Continental  650 belt drive Royal Enfield Interceptor/Continental  650 belt drive Royal Enfield Interceptor/Continental  650 belt drive Royal Enfield Interceptor/Continental  650 belt drive Royal Enfield Interceptor/Continental  650 belt drive Royal Enfield Interceptor/Continental  650 belt drive Royal Enfield Interceptor/Continental  650 belt drive Royal Enfield Interceptor/Continental  650 belt drive Royal Enfield Interceptor/Continental  650 belt drive

Royal Enfield Interceptor/Continental 650 belt drive

Units in Stock4
$599.00 inc. tax
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A belt drive conversion kit for the Royal Enfield Interceptor and Continental 650 Twins, consisting of a Gates Poly Chain Carbon GT belt, with both front and rear pullies.  
Fits the 650 Interceptor, and 650 Continental GT models - the Super Meteor 650 is a different model

Zero maintenance belt drives have been readily available on production motorcycles since 1985.  Quiet, smooth, no more adjustment issues, no more oily mess, no carrying chain lube on a trip, lighter, and lower long term cost due to extended belt and pulley life when compared to a chain drive. 
Read the reviews to see what riders think.............. 

Two gear ratios are available - the stock 2.5:1 finial drive ratio and the more popular "16T" front sprocket mod resulting in a higher 2.375:1
To a large extent, the choice of ratios is a personal preference, driven by ones riding style and local conditions.  I prefer the higher ratio "16T mod" in order to keep the engine RPM a little lower at highway speeds, and to be able to keep up with my mates without flogging the engine to death.  Others prefer the shorter stock gearing - horses for courses

The belt is the latest Generation 4, Gates Poly Chain Carbon GT, and included in the kit.  This is the same belt used by major motorcycle manufacturers in their OEM belt drive models.  A common Gates part, used in thousands of industrial applications and readily available from Gates Dealers worldwide
The rear pulley is CNC machined from 6061-T6 aluminium, and is then Type III hard anodized in satin black.  This results in a durable wear coating with a hardness of Rockwell 68C and in the same range of that of nitrided steel
The front pulley is CNC machined from high tensile steel, then heat treated both for tooth wear resistance, and durability on the spline drive.  Finished by black zinc for corrosion resistance.
Weight is 450 g less than the stock chain drive



TYRE SIZE:

This kit has been designed to fit without interference on the stock 130/70/18 and 150/70/17 tyres.
It has also been used with the higher “16T mod” gearing with a taller 140/70/18 rear tyre.
One Rider is running a much taller 130/80/18 with standard gearing, but had to remove the centre stand




GEARING OPTION:

Gearing is a bit confusing with a larger number being "lower" geared – IE the -Inter / Conti stock sprocket ratio at 2.53:1 is lower than the "16T front sprocket mod" at 2.375:1

 A lower gear ratio (2.53) will accelerate  quicker, but top speed will be lower.  At highway speeds the engine will be spinning at a higher speed, and depending how fast you are riding, you may not want to work the engine that hard for very long.   

 A higher gear ratio (2.375) will accelerate slower, but (theoretical) top speed will be higher IF you have the HP to pull the gearing.  Top speed on these bikes is usually not a consideration, however and some riders, myself included, would prefer lower engine speed on the highway.  When higher geared, cruising speed rpm will be lower, and in the meat of the TQ band.   

Carrol Shelby famously said “horsepower sells cars, and torque wins races”.  RE Street riding is mainly in the engine torque band, I try to match gearing to my riding style.  Having a cruising rpm in 6th in the meat of the torque band, and not flogging the engine to death, works best for me. 

 The Enfield 650 engine has modest torque and horsepower, so gearing becomes a compromise between acceptable performance, the ability to pull a higher gear, with ones tolerance for wringing its neck to keep up with motorway speeds in some countries.  

So how does this math translate into seat of the pants riding:

SPEED IN KPH(MPH)       RPM Stock gearing          RPM "16T mod" higher gearing

100   (62)                         4140                                3890

110  (68)                          4560                                4280

120  (74.5)                       4890                                4670

124  (77)                          5150 TQ peak

130   (81)                          5400                               5050

132   (82)                                                                 5150 TQ peak

140   (87)                          5910                               5450

RPM is calculated and does not account for the bike weight, rider weight, rolling resistance, or drag from panniers and a windscreen - measured rpm will be higher than this calculated engine speed. 

You have a choice of gearing when buying a belt drive, so give it some thought………………….Most riders prefer the higher ratio, as little sacrifice in acceleration, with the benefit of lower engine speed.  


BELT TENSION TOOL:

A belt tension tool is highly recommended.  Proper tension on the belt is important for belt performance and life.  You will need a belt tension tool, to apply 10lbs of load to the belt in order to properly adjust the belt, similar to how you would adjust the chain.  A simple generic tool, and I have been using the Harley once since the late 80's - also manufactured by OTC, Motion Pro and a host of generic manufacturers.  A generic one is listed under options should you not have one

Product Code: cJu1HYY
Product Condition: New
weight: 2900.0g
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Description
Details
Reviews
Installation
Wrenchjockie
15 January 2024
This is a great kit! We installed one on NJ Mike s bike, and it has worked out great. Did the belt drive conversion kit yesterday. Basically, it went better than any new aftermarket kit had any right to go!
Excellent
Jamie
15 January 2024
Everything well packed as you always do with anything you ship. Excellent!
Superb Work
RalphG
15 January 2024
Interesting how an independent machinist can make a major improvement to a motorcycle designed by dozens and built in a factory staffed by hundreds. Superb work!
Efficent
Magnstowiter
16 February 2024
In terms of performance, the belt-driven version of the Royal Enfield 650 has been reported to deliver 39.5 bhp and 44.8 Nm of torque. This indicates that the belt drive may not only offer maintenance advantages but also potentially enhance the bike's power output. Overall, the belt drive conversion for the Royal Enfield 650 offers a maintenance-free alternative to the traditional chain drive, with potential performance benefits, making it an attractive option for enthusiasts and racers alike.
Ride feedback
NJ Mike
15 January 2024
The belt drive is a really sublime mod to your bike. You'll find it much smoother with almost zero driveline lash on/off throttle, it's really a much smoother ride, and I seem to get slightly better gas mileage too. An extra added bonus, no more chain lube to decorate my rear wheel and the back of my suit! I'd like to do a brief follow up from a long day in the saddle yesterday. The belt drive is a really nice upgrade from a chain. The first thing I noticed was how much smoother it is in the on/off throttle moments, it's not as harsh in transition from being fully loaded to no load. Consequently, it has less effect on the frame attitude when entering corners. Also, it seems I'm getting better gas mileage with it too. Although the countershaft sprocket is very heavy, the rear sprocket and belt is a lot less to move than the chain. With the kind of riding I did yesterday, I'd usually get 60-62 mpg. Yesterday I got 67.5 mpg. Could be the slightly higher gearing, or maybe a belt is just a more efficient way to transfer power from the motor to the wheel. Whatever it is, I'll take it. Best part, when I got home I didn't have to lube the chain, and I'll never have to clean one again, ever.
2nd best mod
Hippiesparks
15 January 2024
I have one on my Interceptor. It's the second best mod I've made. Highly recommended, for all the reasons given.
Quality
eflyer-1
15 January 2024
The belt drive kit arrived last week, and now it's installed. Everything works very well! Looking forward to many years of maintenance free operation. The quality of the parts is outstanding, thanks Robert!! The instructions were fine, but the belt tensioning process, both cold and hot, was a bit fidgety with the 10lb. tool, but I made it through.
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