Polaris 850 SKS 155 2020 User Manual

6
9850060 R02 - 2020-2021 850 AXYS™ Long Track Snowmobile Service Manual
© Copyright Polaris Inc.
6.5
CHAINCASE SPROCKET RATIO SPEED CHART – AXYS RMK
7.764″ (197.2 MM) CHAINCASE
NOTE: SHADED COLUMNS = 7 TOOTH DRIVER WITH 3 IN. / 3 PITCH TRACK.
UPPER
SPROCKET
LOWER
SPROCKET
CHAIN
LENGTH
RATIO
THEORETICAL VEHICLE SPEED (MPH) AT 1:1 SHIFT RATIO @ RPM
8050 8250 8450
7T / 2.86P 7T / 3.00P 7T / 2.86P 7T / 3.00P 7T / 2.86P 7T / 3.00P
21 42 74 2.00 76 80 79 82 80 84
21 43 74 2.05 75 78 77 80 78 82
22 45 76 2.05 75 78 77 80 79 82
19 40 72 2.11 73 76 74 78 76 80
21 45 76 2.14 71 75 73 77 75 79
20 43 74 2.15 71 75 73 76 75 78
19 41 72 2.16 71 74 73 76 74 78
19 43 74 2.26 68 71 69 73 71 74
19 44 74 2.32 66 69 68 71 67 73
* NOTE: To calculate the ratio equivalent to an 8T / 2.86P driveshaft, multiply the ratio shown in this chart by 1.143 for 7T / 2.86P
driveshafts or 1.09 for 7T / 3.00P driveshafts.
GEARING STOCK SETTINGS - 2020
GEARING STOCK SETTINGS
MODEL
YEAR
MODEL TRACK TOP GEAR
BOTTOM
GEAR
PITCH
2020
850 PRO-RMK 155 < 3.0
22
43 69
850 RMK Khaos 155 < 3.0 22 43 69
850 PRO-RMK 163 < 3.0 22 43 69
850 PRO-RMK 155 3.0 Track 3.0 19 44 74
850 RMK Khaos 155 3.0 19 44 74
850 PRO-RMK 163 3.0 Track 3.0 19 44 74
850 PRO-RMK 174 3.0 Track 3.0 19 44 74
850 SKS 155 < 3.0 20 40 72
Use the Gearing Stock Settings when making gearing changes with Digital Wrench. If the upper and lower sprockets
on the snowmobile do not match the model specifications in the table, Digital Wrench must be used to re-calibrate the
speedometer offset.
FINAL DRIVE / BRAKE SYSTEMS

Polaris 850 SKS 155 2020 Specifications

General

Brand	Polaris
Model	850 SKS 155 2020
Category	Snowmobiles
Language	English