2015 Forward RZR 900 Trail and S Dalton Clutch kits
Before we get to the kits some clarification to what type of clutch each model has.
The 900 Trail Std and 900 S model have same primary clutch, same secondary clutch the Rapid Reaction secondary also called the non-EBS secondary meaning no low speed engine braking. By the way if you would like to have the much better built EBS secondary and add some engine braking in the process, you can buy the EBS secondary from us but then you would need the EBS clutch kit mentioned below.
The 900 Trail with EPS (Power Steering) LE comes with the much better built EBS roller style secondary with removable helix and low speed engine braking. Only difference in the primaries between this model and the Trail Std and S is the addition of the one way bearing in the primary clutch to give engine braking past what the EBS secondary adds over the Rapid Reaction secondary.
Hmm, didn't mean to confuse you. Typical stages of engine braking Full on EBS has engine braking until you stop, the STD model typically free wheels down hills and at speeds under 10 mph. If you add the EBS secondary we offer separate you will get engine braking down to about 3-4 mph which is much better than the Rapid Reaction. So if I lost you on that just call me.
Now the kits, two different kits, one for the STD Model and same one for the S model then one for the EBS Model
Surprisingly Polaris got this clutch calibration right and Dalton says for the first time ever that I can remember in 6 years of selling Dalton kits that with stock 26" or a light 27" tire then no kit needed on the STD and S model RZR unless you are at high elevation or if you do a lot of sand dune riding so get kit to adjust for that. Once you get some heavy 27" tires and above then the kit is needed to get the RPM back and some performance back from the heavier tires.
The EBS model which once again is the Trail with EPS LE model. Interestingly enough on this model, Polaris did a very poor job of clutch calibration from weight and spring choice to helix angle. This kit is like the 1000 kit, it will come with a dual angle helix also. Dual angle helix means two different helix angle slots to choose from. Depending on application and set up which are in the instructions you will choose one or the other angles on the included billet not cast helix.
So for the EBS RZR, everyone who owns one can benefit and we feel the Dalton kit will make a significant improvement in performance plus the ability to adjust for bigger tires and elevation etc.
I had a comment on the RZR forum how a $2 Billion company like Polaris could not get the clutch calibration right but Hunterworks and Dalton could? Keep in mind, Dalton makes the kits, we sell and support them. Well think on this, do you think a guy in the dunes in AZ with 28" Sand tires and a guy running up and down a fire road in PA with stock tires need the same clutch set up? The answer is no, the dune guy has a heck of load and Polaris only has two set ups, one for near sea level and one for high elevations meaning they make a general kit that is supposed to serve the general public plus then make these parts as cheaply as they can.
Sometimes like the STD model they get the clutch pretty good and sometimes like the EBS model they get it bad. A STD model will outrun a EBS model in a drag race because the clutch calibration is that much off in the EBS model from factory.
As normal you need to check the following before you install a kit, top speed now, top speed RPM and shift phase RPM. Do NOT add anything else to the vehicle, tires etc at same time of kit because it might skew your results. One thing at a time.
Both kits on any of the vehicles we will be shooting for a shift phase RPM of 7500-7900 after the kit is installed where as 7700 might be ideal. This 75hp engine has a wide powerband!! Also when you are testing RPM top speed etc, it needs to be done on a warm belt and on a dirt or gravel road not pavement.
So in short all Trail EPS LE owners can benefit from the kit no matter what tires etc they have. Trail STD and S owners do not need a kit unless they are high elevation or sand riders or changed tires to a heavy 27" and above.
Both kits come with a new secondary spring so you will either need to buy, gain access to a spring compressor which we have or come up with some redneck way to change it.
Clutch puller is not required to do kit but recommended, makes the install better and give you the ability to clean the primary clutch before reinstalling it.
Belt?? We recommend the Gates C12 belt if need a belt, RPM may vary slightly due to the compound difference likely slightly higher.
If you need any more information call me