DR650 FRONT FORK SPRINGS .60

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Regular price
$245.00
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$245.00
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Vendor : Teknik

Product Type : DR650 Stuff

Sku : TNV19-110-60

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Great suspension is not just about taking the big hits - it's also about staying smooth & consistent over the small stuff to allow your tyres to hook up and do their job properly. The springs we use are engineered to give you both.

Talk to us about getting the best out of your DR forks.

Comes with required spacing material and our DR fitting guide and oil recomendments.

Please refer below for information on the correct fit

VINCE STRANG MOTORCYCLES, DR650 SUSPENSION

We expect you will use a qualified mechanic to carry out any repairs or fitting of suggested up-grades, however if you chose to do the job yourself we understand you will use common sense, correct tools, correct technique and work safely.

Forks: to change the oil it is a simple matter to remove the forks, remove the top cap bolt and invert the fork into a suitable container to drain the old oil.

The spacer and spring will slip out, and the oil needs about 30 minutes to drain. Unless you require fork seals or other work it is now ok to add new oil.

VSM suggest 590cc per fork leg if you are just replacing springs, if using “T” or Plex Valves, 560cc is correct. (Follow the oil level instructions when fitting DFX Fork Valves, but it will be about 560cc.) We recommend using 15wt oil when no valves are installed and usually 10wt with valves. If a DFX or Plex valve is used a rate lighter spring can sometimes be used.

Springs: up to 70kg rider .46 rate

                65kg to 75kg       .48 rate

                75kg to 90kg       .50 rate

                85kg to 100kg    .52 rate

                95kg to 115kg    .54 rate

                110kg to 120kg  .56 rate

                 115kg to 125kg  .58 rate

                 125kg plus          .60 rate

Various preload spacers can be used with the above guide (from 10mm to 20mm) to set the fork to your liking, the less preload used the plusher the initial fork movement will be.

A preload spacer sitting on the fork spring with a washer and cut flush with the fork top will give 18mm of preload, so if it is cut to be 4mm below the top it will be 14mm preload. EG; my weight is around 77kg, I use a .50 spring with 12mm of preload for a plush ride but the heavier spring will take a few bigger “G” outs.

It is easy to make the spacer, first drop a washer on the inserted spring, sit the spacer tube on top and draw a line around the spacer level with the fork top.

This is the length to cut for 18mm preload, so decide how you would like the initial movement to feel and subtract (or add) the amount to make it right.

REAR SHOCK:             Up to 70kg rider use 7kg spring

                                      70kg to 85kg - use 8kg spring

                                        80kg to 100kg – use 8.5kg spring

                                      95kg plus rider – use 9kg spring

Set preload (rider sag) at around 65 to 80mm. (it will always be a compromise as loads and riding conditions change constantly)

SETTING SAG; fully extend the rear by putting the bike on a box etc., measure from the axle to a point above on the mudguard.

Sit the bike on its wheels and sit on the bike in a riding position, measure the points again, the difference is the sag.

The 7.5kg and 9kg springs will give their best performance only if the shock is re-valved to suit and we would not recommend the 9kg unless the re-valve is done. If we fit a DFX or FFRC shock piston assembly a lighter spring can be considered.

We will re-shim the rear shock to work with your riding style and spring, so we can use an 8kg spring for example with say a 90kg rider but increase the compression damping to keep the ride plush but supporting.