Home > Side by Sides > Polaris > RZR Pro XP > Performance Packages > Aftermarket Assassins 2020-Up RZR Pro XP/Turbo R Stage 2 Lock & Load Kit **3-5 Day Lead Time**

Aftermarket Assassins 2020-Up RZR Pro XP/Turbo R Stage 2 Lock & Load Kit 3-5 Day Lead Time

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Part Number:AARPXS2LALK

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Kit fits all Pro XP models 2 & 4 Seat 2020-2022
**Note 2021-22 models have a different helix design and do not need the pre airbox intake tube** Price difference for years reflects this.
Lock & Load! This Stage 2 kit provides a big increase in horsepower and torque simplified into an easy package. Tuning, clutching and exhaust on the PXP go together like high powered rifles and tannerite. Together they pack a huge punch for the ultimate power gains to the wheels. The tuning allows for great power depending on the level tune, supporting mods & fuel you want to run. We change boost, timing and hundreds of parameters to deliver safe, yet big horsepower gains. The exhaust greatly reduces back pressure so we can run more boost, and that boost delivers more power. The clutching then transfers that power and turns it into wheel power instead of simply just turning it into RPM. To make sure your airflow is not cut off, we also include our pre airbox intake tube. Since the stock BOV is weak, we include our high quality billet one in this kit as well. This kit is normally/best paired with our level 2 or 3 tune.
2020 Kit Includes: PV3 Tuner, S3 Clutch Kit, Clutch Limiter, Pre Airbox Intake Tube, Billet BOV, Exhaust
2021 Kit Includes: PV3 Tuner, S3 Clutch Kit, Clutch Limiter, Billet BOV, Exhaust
Clutch kit includes setup guideline that lets you know how to setup your weights for tire size & tune level (Works with 29" - 33" Tires)
We highly suggest reading this article on the P90X clutch system to make your decision about clutching: https://aftermarketassassins.com/tech-blog/f/2020-rzr-pro-xp-clutch-issues#
Optional to upgrade to our HD primary clutch. If upgrading to the HD primary clutch, you will need the P90X clutch puller to pull your OEM clutch.
If sticking with the OEM primary clutch, we highly suggest our optional Revolver Tower Lock Cover
Kit includes iridium spark plugs (Not pictured) as the Pro XP models have had issues with low power/bad plugs. A fresh set of plugs, and longer lasting iridium plugs have been the cure.
Quicker throttle response and power delivery
Throttle by wire limiters disabled
Fan on/off at 185 degrees Fahrenheit (Stock is 190). The fan also ramps up in power quicker to keep you running cool.
Optional start in any gear! Does not need to be in park to start. Will start without brake, but may throw a code. Press brake to start until we figure this issue out. Keep in mind this is removing a safety feature.
Seat belt limiter disabled
Speed limiter removed in low and high gears
More throttle % and boost in low gear and reverse
Rev limit at a safe 9300 RPM
See how to install and use the tuner in this VIDEO
No mess of having to send in your ECU & this device is a much safer way of programming. Simply plug in to your Diagnostic port, click tune, wait, and go ride!
Very easy to use tuner that can also check and erase most trouble codes
Easily data log 32 parameters with 1 push of a button and review on your windows computer later
Tuner is updated with the latest firmware to make sure you have a smooth tuning process
1 Tune (along with your stock tune) are included in the initial price. Additional tunes are $50 each. We highly recommend 2 tunes so if poor fuel quality is an issue you can switch to a lower HP level.
For reference; a Stock machine will dyno at 156-158 rear wheel horsepower, 181 crank HP per factory
Tune levels 1-4 are developed on the stock wastegate setting with stock injectors. Tunes 5 & 6 are only available with our 1200cc injectors & require adjusting your wastegate rod. We also offer all tune Levels 1 through 6 designed for the 1200cc injectors & WG rod adjustment.
The Level 1 tune is a modified stock power level tune but has better boost maps to help keep you in the power. We disable many limiters, raise the speed limit, rev limit, and make necessary fuel & timing changes. We maintain the max factory boost of 16.5-17 PSI.
The Level 2 tune offers 17.5-18 PSI of boost with a 10-12 RWHP gain. This tune rips and can be used on a bone stock RZR in most cases. We highly recommend our billet blow-off/diverter valve and pre airbox intake tube. While not required, clutching helps transfer the power to the wheels much more efficiently. This tune can also be used with exhaust, charge tube, and intake tube.... etc. No wastegate adjustment required. 91-93 Octane tune.
The Level 3 tune is a game changer! Hitting hard with a gain of 20-25 RWHP, this tune offers the highest boost possible (18.5-19 PSI) on 91-93 octane fuel. Due to the upgraded Pro XP turbo with higher exhaust flow and more efficient compressor housing, we can get away with higher boost on pump gas. These are absolutely huge power gains that will have you grinning from ear to ear. This tune is built to be a max tune on 91-93 octane. If you only have access to 91 octane and fuel quality is poor or you'll be running really hard that day, we'd suggest using a small amount of race gas or octane boost to bump your octane. This helps prevent engine knock which causes the ECU to retard your timing curve resulting in a slight power loss. Required Mods: High flow pre airbox intake tube, exhaust, Billet BOV, S3 Clutch Kit. Suggested Mod: Charge Tube as we have seen them fail on this level. No wastegate adjustment required.
Level 4 - Beast mode - 200 RWHP! This tune is designed for 98-100 octane (will run on UTV 96, or most fuels up to 110 octane) and was developed using one can of VP Octanium to a tank of fuel. Mixing other race fuel with the tune to get 100 octane output would work great, just keep in mind consistently using leaded fuels can result in premature failure of O2 sensors. Now for the fun part.... this tune is INSANE and brings your Pro XP to a new level at 197-200 RWHP on our dyno. This tune gains 40-43 RWHP and pushes the boost level to 23-24 PSI peak before settling at 22-23 PSI. Keep in mind the Power Vision boost only reads to 22-23 PSI (depending on your altitude) so it will be close to maxing out the gauge. The ECU still has vision above that, but you won't be able to read it without a manual gauge. Required Mods: High flow pre airbox intake tube, exhaust, Charge Tube, Billet BOV, S3 Clutch Kit. Suggested mod: After airbox intake tube WITH catch can, torque head bolts tighter with 120 degrees more rotation. No wastegate adjustment required.
Level 5 1200cc Injectors, Waste Gate Rod Shortened - Beast mode times x2 - 210 RWHP! This tune is designed for 108-110 octane Now for the fun part.... this tune is INSANE and brings your Pro XP to a new level at 210 rear wheel hp on our dyno. This tune gains 50-55rwhp on pushes the boost level to 24-25psi peak, then settles to 23-24psi. Keep in mind the powervision boost only reads to 22-23psi (depending on your altitude) so it will be close to maxing out the gauge. The ECU still has vision above that, but you won't without a manual gauge. There are a few other problems with this tune.... the speedometer struggles keep up with the wicked acceleration, and the tires won't stop burning off. Required Mods: High flow pre airbox intake tube, exhaust, Intake tube with catch can, Charge Tube, Billet BOV, S3 Clutch Kit. This requires shortening your wastegate rod as short as possible to 6.5-7psi crack pressure. Also requires torquing head bolts tighter with 120 degrees more rotation.
Level 6 1200cc Injectors, Waste Gate Rod Shortened - Beast mode x3 - 215 RWHP! This tune is designed for E85 fuel. Now for the fun part.... this tune is simply stupid and brings your Pro XP to a new level at 215 rear wheel hp on our dyno. This tune gains 55-60rwhp on pushes the boost level to 24-25psi peak, then settles to 23-24psi. Keep in mind the powervision boost only reads to 22-23psi (depending on your altitude) so it will be close to maxing out the gauge. The ECU still has vision above that, but you won't without a manual gauge. There are a few other problems with this tune.... the speedometer struggles keep up with the wicked acceleration, and the tires won't stop burning off. Required Mods: High flow pre airbox intake tube, exhaust, Intake tube with catch can, Charge Tube, Billet BOV, S3 Clutch Kit. This requires shortening your wastegate rod as short as possible to 6.5-7psi crack pressure. Also requires torquing head bolts tighter with 120 degrees more rotation.
Max boost levels are listed as reference only. Altitude, temperature, charge temps, intercooler temps and many other conditions play into a factor of final boost output. AA tunes do a better job of making sure you reach these levels as the factory tunes are overly safe.
Performance Helix 107-1043 or 107-1065: Aggressive helix with acceleration/higher horsepower/aggressive fast pace drivers in mind. Works on Pro XP 2 seat 30-33" Dirt Tires, 30-32" dune paddles. Works on Pro XP 4 seat with 30-32" dirt tires, 28-30" dune paddles.
High Load Helix 107-1042 or 107-1062: Slightly less aggressive than the 1065 helix with good acceleration gains/power transfer over the OEM helix. Designed for a heavier vehicle, heavier tires, heavy sand load or crawling type riding in mind. Works on Pro XP 2 seat 30-35" Dirt Tires, 30-32" dune paddles. Works on Pro XP 4 seat with 30-33" dirt tires, 28-32" dune paddles. Excellent all around helix for any Pro XP!
Kits are free shipping to US 48 States ONLY. If you need to purchase from out of the country (or AK/HI) please email, or we will send you a bill for shipping after you order.
If you have any other needs in these tunes, or any concerns; please e-mail!
Oh... and get ready for your RZR to flat out rip!

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Aftermarket Assassins 2020-Up RZR Pro XP/Turbo R Stage 2 Lock & Load Kit 3-5 Day Lead Time

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