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Rear Shock Removal

Shock Spring Removal

!

K2 Bike Rear

5500C, 4500C, 5000, 4000

3000, 2000 1000

Animal, Beast Animal DH 4

up to 140

400

200

550

130-170

500

250

600

160-200

550

300

650

190-230

600

350

700

over 230

650

400

750

Spring Type

NB175 -x-x

NB2-x-x

NB175-x-x or NB2-x-x

Springratehasaneffectondamping. Thehigherthespringrate,themoredampingwillberequiredtocontrolthemotionoftheshock. Thisis whylighterridersfeeltheirshocksmaybeoverdampedwhileheavierridersmaynotperceiveenoughdamping. Seethenoteson Rebound Damping and Compression Damping below for a further explanation.

Changing Coil Springs

CAUTION: Girvin strongly recommends that your K2 Bike be disassembled and adjusted by your authorized K2 Bike dealer. Your authorized K2 Bike dealer possesses the proper training and tools to service your bi- cycle. Improperly assembled or adjusted bicycles can be extremely dangerous, and can result in failure during use and severe injuries. These instructions are provided for owners having sufficient knowledge and the proper tools to do the job.

You may need to change the coil springs on your K2 Bike in order to tune your suspension properly. We suggest this be done by your local K2 Bike dealer or other qualified technician, but if you would like to change the springs on your own, follow these instructions:

  • 1.

    Removetherearwheelfromthebike.

  • 2.

    Removetheuppershockboltwheretheshockattachestotheframeandalsotheloweroneortwoboltsholding

the shock or shock strut to the swingarm.

  • 3.

    Loosenpreload collar from the spring by turning both preload adjuster collar and spring simultaneously and re- move preload collar completely or loosen preload collar enough to remove lower spring clip.

  • 4.

    Remove spring and replace with desired spring. Make sure that the spring is the correct length for the shock. Make sure to preload the spring with at least 1-2mm of preload.

5.

Reinstall the shock on the frame and torque all shock mount bolts to 150 in-lbs.

Once you have selected the correct spring for you, you will need to set up your suspension with the proper amount of suspension sag. Suspen- sion sag is the amount a shock compresses under the weight of the rider. All suspension systems should exhibit some amount of suspension sag. Girvin bikes and forks should all be set up properly with a certain amount of sag. The optimum sag amount for all of our rear and front suspension systems is 20% of the total shock shaft stroke, or 20% of the total wheel travel. For example:

Carbon Frame (5500C, 4500C)

100mm

8mm

2-Tube frame (5000, 4000)

100mm

8mm

Extreme Frame (Animal, Beast)

125mm

8mm

World Cup Frame (3000, 2000, 1000)

90mm

10mm

Downhill Frame (Animal DH)

150mm

10mm

Our Cross-Link forks have a total shock shaft travel of 52mm which yields a total wheel travel of 76mm. To calculate the optimum sag forthisfork,multiply52mmby.2. Theanswergivesyouasuggestedsag,whichfortheCross- Link is 10mm at the shock, or 15mm at the wheel. We suggest that you measure the amount of sag at the shock instead of the wheel.

See the next section on Preload to adjust the amount of sag. The suggested suspension sag amounts for our bikes and forks are as follows:

Frame (Rear shock) / Fork (Front shock)

Total Wheel Travel

Sag at Shock

Cross- Link (All models)

76mm

10mm

Chubby

100mm

20mm

Chubby LT

125mm

25mm

12

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