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POLARIS RZR XP900 Tech Info
PARTS AVAILABLE ONLINE



General Specs

Engine Configuration 4 Stroke DOHC Parallel Twin Cylinder
Engine Displacement 875 cc
Engine Cooling System Liquid
Compression Ratio 10.5:1
Bore x Stroke 93 mm X 64.4 mm
Claimed Peak Horsepower 88 Hp
Claimed Peak Torque (Not listed by Polaris)
REAR WHEEL HORSPOWER 60 Hp
Engine Redline 8750 RPM
Fuel Delivery System Bosch EFI
Throttle Body Venturi Size 46 mm Dual Throttle Bodies
Air Filter Type Pleated Paper
Exhaust System Type Dual headpipe, single muffler
Ignition System Bosch M17 (ECU controlled)
Lubrication System Dry Sump
Transmission Type CVT



Service Info / Specs / Capacities

Oil Capacity 3.5 qts / 3.3 L
oil capacity with filter filter holds additional 200 ml
oil filter part # 2520799
Front Diff oil capacity / type 6.75 oz (200 ml), Polaris Demand Drive Plus
Rear Diff oil capacity / type (with trans, below)
Trans oil capacity / type 44 oz (1300 ml), Polaris AGL Plus
Fuel Capacity 7.25 Gal / 27.4 L
fuel pressure 43.5 psi, +/- 2 psi
Lash Adjustment IN 0.005~0.007" / EX 0.011~0.013"
Valve Adjustment Interval Every 200 Hrs or Every 2,000 Miles
belt oe# 3211148 POLARIS FACTORY BELT
belt epi # WE265020 EPI REPLACEMENT BELT
Air Filter, OEM Part # 7081622
Air Filter, K&N Part # PL-9011 K&N REPLACEMENT AIR FILTER
KMS XP900 Intake System Adds 4-6 HP KMS XP900 INTAKE KIT
injector size oe 310cc/min (29.5 lbs/hr) @ 43 psi
am injectors available 350, 450, 550, 650, 750, 830
OVERSIZED INJECTORS
injector style 233us



Torque Specs

head bolt 21 lb/ft initial, then 26 lb/ft, then addl 180* KMS ARP HEAD STUD KIT
kms studs Final torque 60 ft/lb (?)
oe head gasket # 5813439
am head gaskets Cometic 93.5mm H3336018S COMETIC TOP END GASKET KIT 93.5MM

Cometic 96mm H3336SP1018S COMETIC TOP END GASKET KIT 96.0MM
cam cap torque 89 in/lb, +/- 9 in/lb
primary clutch torque 96 ft/lb (note: some models are 75ft/lb, they will have sticker on clutch housing)
secondary clutch torque 40 ft/lb
wheel nut torque 30 ft/lb, plus addl 90* (1/4 turn)
wheel hub torque 80 ft/lb (front and rear)



AM pistons avail STD BORE

JE 8.0:1, 93 mm 305442 JE PISTON 93MM XP900 PISTON KITS
JE 9.0:1, 93 mm 305443 JE PISTON 93MM XP900 PISTON KITS
JE 10.5:1, 93 mm 305444 JE PISTON 93MM XP900 PISTON KITS
JE 11.0:1, 93 mm 305445 JE PISTON 93MM XP900 PISTON KITS
JE 11.5:1, 93 mm 305446 JE PISTON 93MM XP900 PISTON KITS
JE 12.0:1, 93 mm 305447 JE PISTON 93MM XP900 PISTON KITS -- custom order --
CP 9.0:1, turbo, 93 mm M9035 CP PISTON 93mm XP900
CP 11.5:1, 93 mm M9036 CP PISTON 93mm XP900
CP 12.5:1, 93 mm M9037 CP PISTON 93mm XP900
bores and strokes available

JE 95, 96, and 98 mm pistons avail.
CP 95 and 96 mm pistons avail.



Combustion Chamber Design

Valves Per Cylinder 4
Intake Valves Per Cylinder 2
Exhaust Valves Per Cylinder 2
Valve Angle (Included)

Combustion Chamber Volume

Valve Train Type DOHC, Bucket Followers, Shim-under-bucket
Lash Adjustment IN 0.005~0.007" / EX 0.011~0.013"
Valve Adjustment Interval Every 200 Hrs or Every 2,000 Miles
Intake Valve Diameter 37.72mm / 1.485"
Exhaust Valve Diameter 32.44mm / 1.277"
AM VALVE SIZES AVAIL IN 38.72mm / EX 33.44mm
AM VALVE SPRINGS ARE AVAIL




STOCK HEAD FLOW

intake = 234 cfm, .400" @ 28inch


exhaust = 209 cfm, .400" @ 28inch
RE CNC HEAD FLOW intake= 299cfm, .400" @28inch

  exhaust = 231 cfm, .400" @28inch




Intake Valve Stem Diameter 0.2155~0.2161" / 5.475~5.490 mm
Exhaust Valve Stem Diameter 0.2147~0.2153" / 5.455~5.470 mm
Intake Valve Maximum Lift  
Exhaust Valve Maximum Lift  



CAMS  
Intake Valve Timing

Open BTDC

Close ABDC

Duration




Exhaust Valve Timing

Open BBDC

Close ATDC

Duration

Valve Timing Measuring Point




AM CAMS AVAILABLE

Hot Cams # 5257-2IN / #5258-2E STAGE 2 HOT CAM INTAKE STAGE 2 HOT CAM EXHAUST
WEB # 516/1171; #1062/293
MEGACYCLE (not at this time)



Electrical Specs

Charging System Capacity 750 watts @ 3,000 RPM
Stator Resistance (Y1~Y2, Y1~Y3, 0.11 Ohms, +/- 15%
Y2~Y3) No leg should have continuity to Ground
Stator Output (engine running) 21 V AC +/- 25%, @ 1300 RPM

47 V AC +/- 25%, @ 3000 RPM

79 V AC +/- 25%, @ 5000 RPM
Ignition Coil Primary resistance 1~2, 2~3 in connector, 0.4 Ohms each
Ignition Coil Secondary resistance PTO = 7.0K Ohms +/- 5%

MAG = 7.4K Ohms +/- 5%
Crank Position Sensor resistance Center & Right pin in connector, 1000 Ohms

(+/- 10%)



WIRING DIAG

XP900 ELECTRICAL COOLING FAN

XP900 ELECTRICAL CHARGING SYSTEM / CHASIS POWER


XP900 EFI
XP900 EFI WIRING DIAGRAM

XP900 KEY ON BATTERY POWER  
XP900 LIGHTS  
XP900 STARTER INTERLOCK  
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