BEFORE YOU BEGINRead these instructions and check to be sure all parts and tools are accounted for. Please retain theseinstallation instructions for future reference and parts ordering information.

KIT CONTENTSRESTRICTION

The Timbersled ARO®® Lowering Kit cannot be used in conjunction with the Timbersled TRIO™™ Kit.

This Kit includes:

REF QTY PART DESCRIPTION PART NUMBER1 1 SPINDLE, LOW, BLK 1824944-458

2 2 ASM-SHOCK IFPARO, LOW, BLK 1544294-458

3 8 BUSHING-SHOCK, FLANGED 5456031

4 1 SPANNERWRENCH 2871095-3291 INSTRUCTIONS 9929731

Instr 9929731 Rev 01 2019-06 Page 1 of 9

P/N 2884229

TIMBERSLED ARO™™ LOWERING KIT

Instr 9929731 Rev 01 2019-06 Page 2 of 9

TOOLS REQUIRED• Safety Glasses• Socket Set, Hex Bit, Metric• Socket Set, Metric• Socket Set, SAE

• Torque Wrench• Wrench Set, Metric• Wrench Set, SAE• Vehicle Lift/Support Equipment

CONSUMABLES REQUIRED• Grease, Polaris All Season (or equivalent)• LOCTITE® Threadlocker Blue 243® (or equivalent)

IMPORTANTYour Timbersled ARO™ Lowering Kit is exclusively designed for your vehicle. Please read the installationinstructions thoroughly before beginning. Installation is easier if the vehicle is clean and free of debris. For yoursafety, and to ensure a satisfactory installation, perform all installation steps correctly in the sequence shown.

ASSEMBLY TIMEApproximately 90 minutes

NOTEAdditional time may be required for optional steps, or

to accommodate other installed accessories.

INSTALLATION INSTRUCTIONSCAUTION

BEFORE STARTING INSTALLATION, alwaysensure vehicle is on a flat stable surface and is

properly secured to avoid accidental tipping or othermovement to prevent personal injury and/or damage

to equipment. If applicable, turn key to “OFF”position and remove from vehicle.

WARNINGThe Timbersled ARO® Lowering Kit cannot be used

in conjunction with the Timbersled TRIO™ Kit.Failure to comply will cause damage to componentswhich may result in serious personal injury or death.

1. REMOVE REAR SKID.a. Remove all four (two on left side and two on

right side of vehicle) rear skid boltsA, beingsure to keep track of lock washersB and flatwashersC. Retain all skid mounting hardware.

b. Once all mounting hardware has beenremoved, remove rear suspension and placeon a level work surface.

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2. REMOVE SHOCKS.a. Loosen the two set screwsA on the wheel

collars of both front and rear torque arms toallow each shaft to be removed.

b. Loosely install a suspension bolt previouslyremoved back into each of the shafts so youhave something to grab onto and then pull outthe upper shaftsA.

c. Next, remove the lower cross shaft boltsA andwashersB of the front and rear shocks oneach side of the rail.

NOTEIf lower shaft spins while attempting to remove thebolts you may need to hold the shaft with a smooth

jawed pliers to prevent the shaft from turning.

d. Once all lower bolts have been removed fromboth front and rear shocks, slide both front andrear assemblies into the nearest window in therail to allow them to be turned sideways andremove assemblies from rail.

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e. Next, loosen the set screw on one of the shockretaining collarsB and remove the retainingcollar from the shaftC then remove shaftC.Leave opposite side shock retaining collar inplace. Repeat for opposite shock

NOTEIf your shock has O-ringsD on each side of the

eyelet DO NOT reinstall with your new shocks. Yournew shocks come preassembled with new flanged

bushings.

3. INSTALL NEW SHOCKS.a. Install lower shaftC previously removed into

new shockw and reinstall collar assemblyBback onto shaft being sure it is fully seatedagainst the shock bushing, then torque setscrewA to specification listed being careful notto overtighten.

TORQUE60 in-lbs (7 Nm)

NOTEDO NOT reinstall previously removed O-rings. Yournew shocks come preassembled with new flanged

bushingsD.

b. Place new front shock/shaft assembly intooriginal position .

c. Apply LOCTITE® Threadlocker Blue 243® onALL mounting boltsA and install thepreviously removed fasteners.

TORQUE45 ft-lbs (60 Nm)

d. Repeat steps 3a-3c for rear shock assembly.e. Next, align upper shock eyelet up with the

upper torque arm mounting tubes/collars andinsert upper torque arm shaftA as shown.Remove mounting hardware from upper shaft ifstill loosely installed.

NOTEBe sure shaft is clean and free of debris and apply athin coat of Polaris Synthetic Grease (or equivalent)

before installing.

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f. Once upper shaft is installed, torque set screwsA to specification being sure not toovertighten.

TORQUE60 in-lbs (7 Nm)

g. Repeat step 3e-3f for rear shock.4. REINSTALL REAR SUSPENSION.

a. Apply LOCTITE® Threadlocker Blue 243® onALL mounting boltsA.

b. Place rear suspension back into position andsecure into the tunnel using the previouslyremoved suspension mounting hardwareA,B,C as shown on both left and right sides ofvehicle. Torque to specification.

TORQUE45 ft-lbs (60 Nm)

5. ADJUST TRACK TENSION/ALIGNMENT.a. See your Owner’s Manual for proper track

tension and alignment procedures.

6. REMOVE FRONT SPINDLE.a. Raise front of vehicle off the ground and

properly secure to avoid accidental tipping.b. Remove spindle block locking nutsC and

washersB then remove boltsA and ski/spindle block assembly.

c. Remove fork clamp assembly fastenersB,C,D then remove outer fork clampA, splitbushingG, inner fork clampF and spacerE.

NOTEMake note of all washers/spacers when

disassembling. Washer/spacer quantities andlocations vary by model.

d. Next remove axle bolt and spacers, thenremove spindle.

NOTEMake note of spacer locations for reinstallation.

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7. INSTALL NEW SPINDLE.a. Place provided spindle assembly into position

with the concave side of the spindle facingtowards the rear of the motorcycle. Slide in thestock front axle bolt (unless the fit kit issupplied with a Timbersled machined axle)along with the previously removed spindlespacers in the same orientation as they wereremoved and install the nut. DO NOTTIGHTEN any of the front end fasteners at thistime.

b. Locate the inner fork clampsA and place themonto the inside face of the fork tubes inbetween the fork tube and the spindle with thefork seal relief groove facing up.

c. Slide both inner fork clampsA (less fork clampcap) down between the spindle and fork tubes.Position them as low as possible on the forktube.

NOTESlide the brake-side clamp down on the fork tube aslow as it will go first, then set the opposing side.

Ensure that both left and right fork clamps are sittingat the same height.

d. Install the plastic split bushingB onto the forktubes above the clamps with the bushingflange on the top. Slide the bushing down intothe fork clamps so that bushing flange is all theway down inside the relief groove.

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e. Rotate the spindle forward and back until thefork clamp bolt holes line up with the slottedspindle holes. This will properly set the correctamount of trailing the ski will have in relation tothe axle bolt.

NOTETo help hold the spindle in place while you work on ityou can snug the axle nut and set the spindle on theground. You can then tap the spindle back and forth

to get the correct positioning.

f. Place the outer fork clampsC onto the lowerassembly with the fork seal relief groove facingup and so that the split fork bushing flange isnot pinched or crushed.

g. Insert the previously removed front fork clampbolts on both left and right fork clamps with theshorter fork clamp bolts in the front holes andthe longer bolts in the rear.

IMPORTANTIf applicable, the shorter fork clamp bolts MUST go inthe forward most mounting holes on both left and

right fork clamps.

h. On the rear fork clamp bolts, you will use theincluded spindle support cross shaftD that thelonger bolts will thread into. This cross shaftwill fit in-between the ears of the spindle andwill provide support to the assembly. Use thepreviously removed flat washer and locking nuton the inside of the spindle to secure the frontfork clamp bolts. Torque the front and rear forkclamp bolts evenly to the specification listedbelow.

TORQUE18 ft-lbs (25Nm)

i. If re-installing bike’s stock front axle, see yourbike manufacturers owner’s manual for propertorque specifications. If using a front axleprovided in your Timbersled Install Kit, torquethe axle boltA to the specifications below.

TORQUE33 ft-lbs (45Nm)

j. Tighten the lower fork tube pinch bolts to yourbike manufacturers specified torque settings.

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k. Reinstall ski assembly as shown usingpreviously removed spindle block boltsA,washersB, locking nutsC, and spacerD.Torque to specification.

TORQUE33 ft-lbs (45Nm)

8. VERIFY WORK.a. Check to make sure all tools are accounted for

and all necessary steps have been completed.

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TUNING TIPS

By adjusting the amount of preload on the front andrear shocks you can change the ride characteristics ofthe vehicle. The shocks provided in the TimbersledARO™ Lowering Kit come preassembled with 1/2”(12.7mm) of spring preload on both front and rearshocks.

Unloaded Overall Length (OAL) Of Spring: 7”(17.8cm)Spring Preload Range: 1/16”(minimum) -1”(maximum) (1.5mm-25.4mm)

CAUTIONDO NOT EXCEED MIN/MAX preload values.

Failure to comply may result in personal injury ordamage to equipment.

Rider weights and riding styles vary greatly andshocks can be adjusted per individual preference. Ingeneral, less preload will make the ride softer andmore preload will make the ride stiffer.

The following are examples of adjustment forreference:Example 1

• If you feel like the ride is too soft and bottoming outthe rear suspension you can add more preload tothe rear shocks. This will increase the overallstiffness of the suspension.Likewise, if you feel the ride is too harsh, you candecrease the preload in the rear shocks which willdecrease the overall stiffness of the suspension.

Example 2

• If it feels like it has to much pressure on the ski andit is hard to steer you can put more preload on thefront shock and less preload on the back shock(example ½” preload front shock ¼” on rear shock)and this will lighten up the steering effort.

TIPIf you can not achieve a light enough steering effortyou can also purchase and install the ARO DeuceCenter Skag - PN 2884022 off of the Timbersled.

com website or through your Authorized TimbersledDealer.

The ARO Deuce Center Skag helps lighten up thesteering effort.

Example 3

• If the ski feels unstable, or it feels like the ski wantsto lift to easy, you can adjust the preload to addmore pressure on the ski to make it feel moreplanted. You can do this by adding preload to therear shock and taking preload out of the front shock.(example ¼” front shock ½” rear shock)

FEEDBACK FORMA feedback form has been created for the installer to provide any comments, questionsor concerns about the installation instructions. The form is viewable on mobile devicesby scanning the QR code or by clicking HERE if viewing on a PC.

FEEDBACK FORM