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Premium Member
MY21 650 SBA 146, ES, ICE Storm 1.5
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Discussion Starter · #1 · (Edited)
2022 Aug. 9th​
Linked from Matryx FAQ

First, It is early, the data in the Online Parts database, is changeable, not too reliable.

MY23 Snow Polaris Online Parts website


Second, a few of the more popular MY23 models are not yet in the Polaris Online Parts database.
.. At this time, the Boost turbocharged Mountain sleds, the 900R and the MY23 600 Indy Cross Country, sleds are missing.

However the new MY23 Matryx 650 SKS 146, Switchback 146, the Boost non-mountain, and the 650/850 XCRs are now in the public Online Parts database.

But, here is what I have noticed at this time, that I think is likely to be correct.

Section Titles:
  • INTERNAL ENGINE COMPONENTS - - - - - - - - - - - - - -
  • 2209838 Fuel Pump Assembly (PFA) only used by MY23 turbocharged Patriot Boost
  • REED VALVE ASSEMBLY & REPLACEMENT PETALS -- - - - - - - - - - - - - - - -
  • Chaincase ratios for MY23 non-boost compared to MY23 Boost flatland sleds. Also "R" tracks & part numbers. - - - - - - - - - - - -
  • BOOST & PROSTAR S4 4 stroke CLUTCH PARTS - - - - - - - - - - - - - - - - - - -
  • DRIVE BELTS - - - - - - - - - - - - - - -
  • VES Exhaust Valve Systems - - - - - - - - - - - - - -
  • FLYWHEEL and ECU - - - - - - - -



INTERNAL ENGINE COMPONENTS - - - - - - - - - - - - - -

new/different wrist pin and/or piston in the piston w/ring & pin kit, being used:
2209887 on the MY23 650 Patriot engines,
2209886 on the MY23 850 Patriot engines. non-boost
2209354 on the MY22-23 850 Turbocharged Patriot Boost engines.

3023976 are the cylinder heads for MY22-23 Boost 850 engines.
5411675 inner cylinder head O-rings are the same part number for 700/800/850 twins this century
3023433 850 cylinders are the same part number for all MY19-MY23

The 650 2208740 crankshaft assemblies still have the same part number, as those for MY21 & MY22.
The 850 2208745 crankshaft assemblies still have the same part number, as those for MY21 & MY22, including Patriot Boost engines

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2209838 Fuel Pump Assembly (PFA) only used by MY23 turbocharged Patriot Boost

---

REED VALVE ASSEMBLY & REPLACEMENT PETALS -- - - - - - - - - - - - - - - -

Yearccpart #Part Description - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
MY216501206267ASM-REED VALVE
MY216502208584K-REED PETALS 650 [SVC KIT FOR ONE REED VALVE]
MY22, 236501208683ASM-REED VALVE,650
MY22, 236502209031K-REED PETAL,650 [SVC KIT FOR ONE REED VALVE]
MY21-23
Matryx
8501206265Reed Valve Assembly
MY21-23
Matryx
MY19up
Axys
8502207948K-Reed Petals 850 [SVC KIT FOR ONE REED VALVE]

Chaincase ratios for MY23 non-boost compared to MY23 Boost flatland sleds.
Also "R" tracks & part numbers. - - - - - - - - - - -


MY23 VR1 850 129 __ 23:37-68 1.61 ... 1.352" Cobra 129
MY23 VR1 850 137 __ 22:37-68 1.68 ... 1.352" Cobra 137

MY23 VR1 Boost 129 23:37-68 1.61 ... 1" Ripsaw II R 129 #5418184
or 1.352" Cobra R 129 #5418185

MY23 VR1 Boost 137 23:37-68 1.61 ... 1" Ripsaw II R 137 #5418186
or 1.352" Cobra R 137 #5418187

MY23 850 Switchback Assault 146 ___ 23:40-70 1.74 ... 1.352" Cobra 146
MY23 Boost Switchback Assault 146 _ 23:40-70 1.74 ... 1.352" Cobra R 146 #5418188


BOOST & PROSTAR S4 4 stroke CLUTCH PARTS - - - - - - - - - - - - - - - - - - -


ModelP22 Prim.
Spring
Primary
weights
TSS-04
Secondary
Spring
TSS-04
Secondary
Helix
Notes - - - - - - - - - - - - - - - - - - -
MY22 Boost RMK 155
MY22 Boost RMK 165/163
7045965
165/310​
1327227
14-78​
7043363
Black/Purple
LH​
5144320
64/44
.40 BAE ER​
MY23 Boost VR1 129/137
MY23 Boost SBA 146
7045965
165/310​
1327230
14-84​
7043063
Black LH​
5144849
58/46
.36 BA35 ER​
MY23 Prostar S4 INDY XC 129/137
MY23 Prostar S4 Nordic Pro 146
MY23 Prostar S4 Voyageur 146
7044504
58/120​
1327216
15-76​
Boss Team
7045922
180/240​
Boss Team
Movable Sheave
273/42 STRT​
MY23 Prostar S4 Titan
7045869
55/155​
1327216
15-76​
Boss Team
7045922
180/240​
Boss Team
Movable Sheave
273/42 STRT​

DRIVE BELTS - - - - - - - - - - - - - - -

== 10.625" Clutch Center to Center Distance


3212325 BELT-DRIVE 10.625CD N8E 14 DEG (use with P22 primary)
. Used by MY23 Boost VR1 129/137, Boost SBA 146 and Prostar Titan 4 stroke

3211215 BELT-DRIVE 10.625CD
. Used by MY19-23 Flatland 800 & 850 sleds including Titans, not used on Boost.

3211165 BELT-DRIVE 10.625CD CVT MBL MID
. Used by MY15-21 Axys 600 flatland sleds, MY21-23 650 Matryx flatland

== 11.5" Clutch Center to Center Distance


3211216 BELT-DRIVE, 11.5CD
. Used by MY19-23 850 Mountain Machines, including MY22 Boost RMKs

3211115 BELT-DRIVE, 11.5CD,CVT MBL
. Many different 600/700/800 MY05-15, MY16-21 Axys 600 Mountain, MY22-23 Matryx 650 Mountain.

3211183 BELT-DRIVE, 11.5CD
. Used by MY16-19 Axys 800 Mountain


FLYWHEEL and ECU - - - - - - - -


This summarizes information from 850Switchback, ExcursionPSD and others...

The High-Resolution ignition and Engine Management system used on some Mountain sleds last year, is rolling out in MOST of the MY23 flatland sleds.

A new High Resolution Flywheel: 4019967 FLYWHEEL-PBR,21T-3T was used on Matryx Mountain sleds in MY22, and on ALL MY23 Matryx sleds, including turbocharged Patriot Boost. This is verbally called the "21 minus 3 tooth" flywheel, I think to distinguish it from the simple 18 tooth flywheels.

More accurate flywheel positioning data supports better injector event & spark timing.

MY22 mountain & Boost sleds have a 4019295 ECU from the turbo sleds is used with this High resolution flywheel. A new ECU: 4080749 ECU-BASE, KOK, NA is being used on ALL MY23 Matryx sleds, so far. I expect the MY23 Boost sleds, will have a new ECU also. The faster chip in the ECU will process the more precise data quicker to respond to changes and make adjustment as needed. Improved throttle response and cleaner running.

The same 4017454 Stator is used as in the other MY21/22 650 & 850 Patriot engines.

With very fine identification of the position of the flywheel, AND a high performance ECU, calculations about fuel flow and Ignition timing, can be made at the last possible moment. This is more significant on a boosted engine, where pressure at the intake manifold is changing quickly and often. We will have to wait and see what improvements showup when a MY22 non-BOOST 850 RMK 146 is matched up against an MY22 850 Switchback Assault 146,

Here is a table of the flywheel and ECU part numbers for the last few years 650 and 850 sleds:



YearFly-
wheel
ECU
Part#
Description - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
MY19-4017455FLYWHEEL-PBR,RE,119MM (Standard Resolution)
4019967Flywheel-PBR,21T-3T (High Resolution)
4018714ECU, KOK, 840T (MY20up 850 Axys)
4019066ECU-BASE,KK,840,21 (MY21 Matryx)
4019295ECU-BASE,KOK,840T,MY22 (Matryx Mountain, all)
4080749ECU-BASE,KOK,NA (MY23 Matryx without Boost)
MY1940174554018714-850 Patriot All
MY2040174554018714-850 Patriot All
MY2140174554018714-850 Axys All
MY2140174554019066-650 & 850 Matryx All
Year
Fly
Wheel
ECU
Part#
Description - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
MY2240174554019066-650 & 850 Matryx flatland
MY2240174554018714-850 Axys flatland
MY2240174554018714850 Axys RMK PRO 155 2.75" / 155 3" ALL OPTIONS (R01)
MY2240174554018714850 Axys RMK KHAOS 155/INTL (R01)
MY2240174554018714850 Axys RMK PRO 163/165 ALL OPTIONS (R02)
MY2240174554018714850 Axys RMK KHAOS 163/165 ALL OPTIONS (R02)
MY2240199674019295PATRIOT BOOST RMK PRO 165/163 SLASH/INTL ALL OPTIONS (R03)
MY2240199674019295PATRIOT BOOST RMK KHAOS MATRYX SLASH 155/INTL (R04)
MY2240199674019295850 RMK KHAOS MATRYX 155/INTL (R01)
MY2240199674019295850 RMK KHAOS MATRYX SLASH 155/ INTL (R01)
MY2240199674019295650 RMK PRO MATRYX 155/INTL (R01)
MY2240199674019295850 RMK PRO MATRYX 155/INTL (R01)
MY2240199674019295850 RMK PRO MATRYX SLASH 155/INTL ALL OPTIONS (R01)
MY2240199674019295850 RMK KHAOS MATRYX SLASH 165/163 (R02)
MY2240199674019295850 RMK PRO MATRYX SLASH 163/165 INTL (R01)
MY2240199674019295650 RMK KHAOS MATRYX SLASH 146/INTL (R01)
MY2240199674019295850 RMK KHAOS MATRYX SLASH 146/INTL (R01)
MY2340199674080749-650/850 Matryx w/out Boost
MY234019967????-850 Matryx Boost

VES Exhaust Valve Systems - - - - - - - - - - - - - -

The MY21up Matryx 650/850 Patriots do not use the same E-VES system that the earlier 800 & 850 sleds with E-VES used.

All MY21up Matryx 650 & 850, use a Non Smart Valve VES system, where the ECU directly controls the Non Smart Exhaust valve actuator. They have 25% faster valve actuation.

Starting with MY15 ALL AXYS/TITAN 800's and 850's used a Smart Valve system where the ECU gives commands to the Smart Actuator, and the 800s use a PWM to Analog signal convertor. The Smart Actuator works out how much movement is necessary to achieve the desired position, and then sends success/failure codes to the ECU.
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4014355 ACTUATOR, EV-SMART (MY15-23 AXYS/Titan 800)
4016933 ACTUATOR, EV-SMART GPA (MY19-MY22 AXYS 850)
4018736 ACTUATOR, EV-NON SMART (MY21up Matryx 650 & 850)
 

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2023 VR1 137 BST / 2022 XCR 136 850
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First, It is early, the data in the Online Parts database, is very changeable, not reliable.

Second, most of the more popular MY23 models are not yet in the Polaris Online Parts database.

But, here is what I have noticed at this time, that I think is likely to be correct.

----

new/different wrist pin and/or piston in the piston w/ring & pin kit, being used 2209887 on the MY23 650 Patriot engines, 2209886 on the MY23 850 Patriot engines.

The 650 & 850 crankshaft assemblies still have the same part numbers, as those for MY21 & 22.
but there wasent a problem for MY 22 lol
 

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What piston(s) are you using for replacements instead of the OEM? I guess most that still have warranty are stuck sticking with OEM as dealers/Polaris will not authorize anything else should you have an issue under the warranty period...
 

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MY21 650 SBA 146, ES, ICE Storm 1.5
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7,183 Posts
Discussion Starter · #9 · (Edited)

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MY21 650 SBA 146, ES, ICE Storm 1.5
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7,183 Posts
Discussion Starter · #10 · (Edited)
I would say yes but its a kit , kits most of the time mean there was a problem .......
To force the replacement of pistons and wristpins together in Polaris 2 stroke liquid cooled snowmobile engines, they have only been available in a Service Kit form, for many years.
 

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MY21 650 SBA 146, ES, ICE Storm 1.5
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7,183 Posts
Discussion Starter · #11 ·

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Premium Member
MY21 650 SBA 146, ES, ICE Storm 1.5
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7,183 Posts
Discussion Starter · #12 · (Edited)
Added information about what sleds are in the Polaris public Online Parts database.

.. At this time, the Boost turbocharged sleds, the MY23 Switchback Assault 146, and the MY23 XCR sleds are missing.
However the new MY23 Matryx 650 SKS 146 is now in the public Online Parts database.

MY23 Mechanical Parts Changes post#1
 

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MY21 650 SBA 146, ES, ICE Storm 1.5
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7,183 Posts
Discussion Starter · #14 · (Edited)
MY23 Mechanical Parts Changes post#1

Added information to above post about MY23 mechanical parts changes in the Polaris public Online Parts database.

.. At this time, the MY23 Mountain Boost turbocharged sleds, and the MY23 600 Indy Cross Country sleds are missing.
However the new MY23 flatland turbocharged Boost sleds are now in the public Online Parts database.
Different pistons for the MY23 850 Boost engines.
 

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MY21 650 SBA 146, ES, ICE Storm 1.5
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7,183 Posts
Discussion Starter · #15 ·
MY23 Mechanical Parts Changes post#1

Added information to above post about MY23 mechanical parts changes in the Polaris public Online Parts database.

* Chaincase gearing and tracks on MY23 Matryx flatland Boost and comparable 850 sleds.
 

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MY21 650 SBA 146, ES, ICE Storm 1.5
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7,183 Posts
Discussion Starter · #16 ·
MY23 Mechanical Parts Changes post#1

Added information to above post about MY23 mechanical parts changes in the Polaris public Online Parts database.

* Clutch tuning parts for P22 primary and TSS-04 / Team Boss on Boost & Prostar S4 4 stroke snowmobiles
 

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MY21 650 SBA 146, ES, ICE Storm 1.5
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7,183 Posts
Discussion Starter · #17 ·
MY23 Mechanical Parts Changes post#1

Added information to above post about MY23 mechanical parts changes in the Polaris public Online Parts database.

* Drive Belts for Matryx, Axys and some earlier Polaris sleds.
 
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23 650 Adventure, 22 850 Assault, 21 XC 650 137
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Can you remind me where the public online database is? Is it the same parts diagram’s as Babbitts and other part-houses like that have?
I use polaris.com , Babbitts has the same diagrams as well.
 
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