Just Purchased 2005 CRF450X


141 replies to this topic
  • ajklinger

Posted 25 August 2011 - 11:40 PM

#61

Just got a crf450x and need everthing listed above, pretty much.   Any suggestions on where to buy.

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  • Nayther

Posted 26 August 2011 - 01:07 PM

#62

Start shopping! The TT store is a good start if you don't know anybody else to buy from Rocky Mountain is another good source.

  • YHGEORGE

Posted 28 August 2011 - 02:33 PM

#63

Krannie said:

The Showa forks have three issues:

- mid stroke harshness
- overly stiff pressure spring (first 2" of travel)
- bad oil- it's junk right from the factory

--You can improve the mid stroke harshness by adding stiffer fork springs. You can solve it by having the fork re-valved.
--You can improve the initial stroke by putting in a softer pressure spring.
--Replace the fork oil. It only lasts about one year, even if you don't ride the bike. Air gets into the oil and cavitates it, it oxidizes, and it turns into sludge in 5 years.

Go with the stock settings to start with. Consult your service manual. Of course you have one.
Go out 2 clicks  out from stock on everything for very slow, and 2 clicks in from stock on very fast riding.

Try not to mess with the high speed compression damping on the shock too much. It is strongly tied to the low speed compression and the rebound. High speed mean high 'shaft speed'; square edge bumps and the like. Nothing to do with bike speed.
1/8 - 1/4 turn is a lot.

If you combine your sag settings (98-105mm) with a good 'f ' series front tire (for heavier four strokes) you will find the bike suddenly is able to turn consistently. You fork rebound needs to be not too soft either.

Excellent post. :)

  • Sofiedog

Posted 05 September 2011 - 01:12 PM

#64

I received the other fork spring, but I have been riding and haven't rebuilt forks, yet.

I did take a little time to install a Shorai Lithium Iron LFX14L2-BS12 battery. It has 210 CCA and didn't have a problem cranking over the motor all day. It weighs about 1.5 lbs. The battery I took out weighed about 4.75 lbs. That's a 3.25 lb savings.:)
Battery was not cheap, $146 from CRF's Only, but the case/housing, along with the pre-cut foam pieces, made the installation simple. I used one thick piece on the bottom and used the stock battery strap and connections.

I also had time set my race sag. Have it set at 100 mm.:)

  • Krannie

Posted 05 September 2011 - 02:09 PM

#65

Sofiedog said:

I received the other fork spring, but I have been riding and haven't rebuilt forks, yet.

I did take a little time to install a Shorai Lithium Iron LFX14L2-BS12 battery. It has 210 CCA and didn't have a problem cranking over the motor all day. It weighs about 1.5 lbs. The battery I took out weighed about 4.75 lbs. That's a 3.25 lb savings.:)
Battery was not cheap, $146 from CRF's Only, but the case/housing, along with the pre-cut foam pieces, made the installation simple. I used one thick piece on the bottom and used the stock battery strap and connections.

I also had time set my race sag. Have it set at 100 mm.;)

:)

  • Sofiedog

Posted 07 September 2011 - 05:40 AM

#66

Finally !!! I made time to work on my forks last night. Drained the original 6 year old fork fluid from the Damper Assy and Outer Tube per the Owners Manual.;)

The Motion Pro 50 mm wrench I bought was wrong. It was made for a hex nut and the fork caps are an octagon. Had to buy a new tool.:)

Installed the stiffer 0.49 kg/mm springs. They are clearly marked with 3 "scribe" marks on the end. Filled the Damper Assy with 6.4 oz of Pro Honda HP 5W Fork Oil. Pumped the assy a few times (slowly or you'll make a mess, like me!!) per the manual to bleed the air before installing the cap. After assembling the Damper Assy, pumped it 100 mm a few times and then full stroke and drained the extra oil from the fork damper per the manual. Added 11.4 oz into the outer tube and reassembled the forks. Note, if you do the math, one 32 oz bottle of fork oil is not enough, you'll come up a few ozs short. ;) Fortunately, I did the math ahead of time.:)
Fork seals had been working well, fork sliders are always dry, so I left them alone, this time.:)

Looks like I can raise the fork tubes in the triple clamps about 10 mm and still have clearance to the handlebars. Again, I would like to make the beast turn quicker on tight single-track trails. I don't do much high speed, open desert riding.
I'm thinking about taking a test ride with the forks raised the full 10 mm, or maybe 5 mm? I can't think of any other "free mods" to get the bike to turn quicker before I spend a lot on triple clamps with less off-set than the 2005's 24 mm off-set.:)

  • Krannie

Posted 07 September 2011 - 05:56 AM

#67

Sofiedog said:

Finally !!! I made time to work on my forks last night. Drained the original 6 year old fork fluid from the Damper Assy and Outer Tube per the Owners Manual.;)

The Motion Pro 50 mm wrench I bought was wrong. It was made for a hex nut and the fork caps are an octagon. Had to buy a new tool.:)

Installed the stiffer 0.49 kg/mm springs. They are clearly marked with 3 "scribe" marks on the end. Filled the Damper Assy with 6.4 oz of Pro Honda HP 5W Fork Oil. Pumped the assy a few times (slowly or you'll make a mess, like me!!) per the manual to bleed the air before installing the cap. After assembling the Damper Assy, pumped it 100 mm a few times and then full stroke and drained the extra oil from the fork damper per the manual. Added 11.4 oz into the outer tube and reassembled the forks. Note, if you do the math, one 32 oz bottle of fork oil is not enough, you'll come up a few ozs short. ;) Fortunately, I did the math ahead of time.:)
Fork seals had been working well, fork sliders are always dry, so I left them alone, this time.:)

Looks like I can raise the fork tubes in the triple clamps about 10 mm and still have clearance to the handlebars. Again, I would like to make the beast turn quicker on tight single-track trails. I don't do much high speed, open desert riding.
I'm thinking about taking a test ride with the forks raised the full 10 mm, or maybe 5 mm? I can't think of any other "free mods" to get the bike to turn quicker before I spend a lot on triple clamps with less off-set than the 2005's 24 mm off-set.:)

- less race sag (95)
- taller rear tire (dunlop 739AT is the tallest, I think)

  • Sofiedog

Posted 07 September 2011 - 06:05 AM

#68

Also, just noticed in manual recommendation to remove chain links to shorten wheelbase. Manual also states that Fork Height is not adjustable !! It says the top of the fork tube should be flush with the top of the clamp. What gives?:) The outer tubes are turned to a constant diameter at the lower and upper clamps enough to easily support raising the tubes 10mm.:)

  • Krannie

Posted 07 September 2011 - 06:36 AM

#69

Sofiedog said:

Also, just noticed in manual recommendation to remove chain links to shorten wheelbase. Manual also states that Fork Height is not adjustable !! It says the top of the fork tube should be flush with the top of the clamp. What gives?:) The outer tubes are turned to a constant diameter at the lower and upper clamps enough to easily support raising the tubes 10mm.:)

Yes, shorter wheelbase does help.
You can go 10mm no problem; your front fender tip might 'tap' the knobs of your front tire, which makes a very scary noise the first time you hear it.....

  • Sofiedog

Posted 09 September 2011 - 02:19 PM

#70

Got a chance to ride some tough single track and jeep trails today.:)
I'm liking the way the forks are performing. I'm running the standard oil viscocity and oil level for the springs.
I've tried two clicks out and rode today with four clicks out on the fork compression dampers. I'm trying to soften sharp edge hits from rocks. I also tried two clicks in on the rebound dampers to increase the rebound damping.  My thought is that I want the forks / dampers to deflect and "absorb" the sharp hits when they compress. Then, I wanted the rebound damping to be stiff to absorb more of the rebound from the springs so that the rebound is absorbed and does not kick me off line. Not sure if this was the correct thing to do but it felt good.:)
The best way I can describe it is to say the forks had a "dead" feeling when I hit rocks at 10 - 20 mph which enabled me to keep up my speed in the rough sections.:)
I didn't have any issues with my tires hitting the bolts under the front fender, even with the forks raised 10 mm. Although, I didn't try any big jumps.
I'm still running the 100 mm of sag and the bike is turning better at slow speeds and still feels stable on fire roads at 50 mph. I think I will try decreasing the race sag to 95 mm. Then, I have to decide if I want to invest in 20 mm off-set triples.;)

  • Sofiedog

Posted 11 September 2011 - 10:32 AM

#71

Rode some single track again yesterday with some friends. I was out front because they were riding dual sport 650's with big gas tanks (and probably less than optimum tires.):)
Got a chance to ride fast, taking a lot of hard, sharp hits to front and rear and making quick turns. I'm getting faster on the 450, partly because the bike has been tuned for these type trails and I think I'm becoming more experienced with the 450.;)
However...the MAXXIS Desert IT rear tire has been getting worn and losing traction. It has about 250 rocky miles on it. I decided to drop the pressure from 14 psi to 11 psi. The tire didn't have any better traction and I got a flat within 30 min.:)
I rode the rear flat back to my truck (~4 mi). The two rear rim locks worked. Later in my garage, when I pulled the tube out, I could see impressions of the two rim locks in the tube. I put some air in the tube and noticed leaks in a couple of spots with small punctures opposite the rim locks. When I looked at the rim locks (Motion Pro's new lightweight plastic) There were some sharp edges at the spots that lined up with the tube punctures. I ground down the sharp edges of the rim locks before reinstalling them. I couldn't find anything that punctured the tire.
Used a new rim strip with a new IRC Heavy tube. They're cheaper than the other brand of HD tube Iv'e been using and weigh a little more (2lb 10.5oz), so I guess its a little thicker?
Put the tire back on but flipped it around to use the "sharp" edge of the knobbies.:)
Went riding again this morning and the tire hooked up much better. Pounded the tires pretty hard without any flat issues.:)

  • Sofiedog

Posted 13 September 2011 - 07:50 PM

#72

Got the Mohard radiator braces mounted. I got the black anodized ones and they look good and look plenty strong.:)
But, they are very heavy. They weigh 3.75 lbs with all the mounting hardware!!!:)

Net weight reductions:
Muffler = 3.75 lbs lighter
Header/heat shield = 0.5 lb lighter
No Toil Air filter & Screen = 0.5 lb lighter
Shorai battery = 3.25 lb lighter
That's 8 lb off the bike.:)

Net Weight additions (weight of added part less weight of removed part):
Acerbis skid plate = +1.0 lb
Acerbis handguards = +2.25 lb
Mohard radiator braces = +3.75 lb
MAXXIS Desert tire = +2.5 lbs
HD tubes = 1.0 lbs (est. didn't weigh original tubes)
That's 10.5 lb added!!!

Dang!!! The bike is 2.5 lbs heavier than stock:banghead:

I'll look at some options to lighten the bike. Maybe replace the MAXXIS Desert with an MX51, swap to an aluminum rear sprocket and a ProMoto kick stand. That should be about 4.5 lb savings back.;)

  • backyard hack

Posted 13 September 2011 - 08:01 PM

#73

the alloy rear sprockets wear fast

i recommend the supersprox stealth rear , strong and great value

  • Krannie

Posted 14 September 2011 - 12:51 AM

#74

Sofiedog said:

Got the Mohard radiator braces mounted. I got the black anodized ones and they look good and look plenty strong.:)
But, they are very heavy. They weigh 3.75 lbs with all the mounting hardware!!!:)

Net weight reductions:
Muffler = 3.75 lbs lighter
Header/heat shield = 0.5 lb lighter
No Toil Air filter & Screen = 0.5 lb lighter
Shorai battery = 3.25 lb lighter
That's 8 lb off the bike.:)

Net Weight additions (weight of added part less weight of removed part):
Acerbis skid plate = +1.0 lb
Acerbis handguards = +2.25 lb
Mohard radiator braces = +3.75 lb
MAXXIS Desert tire = +2.5 lbs
HD tubes = 1.0 lbs (est. didn't weigh original tubes)
That's 10.5 lb added!!!

Dang!!! The bike is 2.5 lbs heavier than stock:banghead:

I'll look at some options to lighten the bike. Maybe replace the MAXXIS Desert with an MX51, swap to an aluminum rear sprocket and a ProMoto kick stand. That should be about 4.5 lb savings back.;)

Only 2.5?   That's very, very, low.

  • Sofiedog

Posted 21 September 2011 - 12:01 PM

#75

I've had a couple of rides since installing the Mohard radiator braces. Got a nice compliment on how good they look.:smashpc:
However, if I did it correctly, I did not re-install the plastic louvers in front of the radiator. They don't seem to be compatible with the Mohard set-up?
Both rides were in ~90F temps with some slow 1st gear riding. Didn't seem to have any overheating issues. The real test will be next summer when I'm riding in 105F weather.:thumbsup:

  • Sofiedog

Posted 03 October 2011 - 08:54 PM

#76

Installed the ProMoto Kickit Billet Kickstand. It looks nice but I am disappointed with it's weight. It's only a 0.25lb lighter than stock!!! :foul:Also, the bike stands up more vertical than with the stock kickstand which makes it feel less stable on uneven ground.

Net weight reductions:
Muffler = 3.75 lbs lighter
Header/heat shield = 0.5 lb lighter
No Toil Air filter & Screen = 0.5 lb lighter
Shorai battery = 3.25 lb lighter
ProMoto Kickstand = 0.25 lb lighter
Removed Radiator Louvers = 0.5 lb lighter
That's 8.75 lb off the bike.:smashpc:

Net Weight additions (weight of added part less weight of removed part):
Acerbis skid plate = +1.0 lb
Acerbis handguards = +2.25 lb
Mohard radiator braces = +3.75 lb
MAXXIS Desert tire = +2.5 lbs
HD tubes = 1.0 lbs (est. didn't weigh original tubes)
That's 10.5 lb added!!!:busted:

The bike is still 1.75 lbs heavier than stock:foul:

The MAXXIS Desert IT rear tire is pretty worn. I bought an MX51 rear tire. It's about 1 lb lighter than the MAXXIS.
Haven't had any overheating issues without the radiator louvers and have been riding in 90F weather.:thumbsup:

  • zidaro

Posted 20 October 2011 - 09:22 PM

#77

just picked up a near virgin '05 X.
lots of great info in this thread, thanks Sofiedog and Krannie.  
Dont stop now.

  • Sofiedog

Posted 22 October 2011 - 01:13 PM

#78

Zidaro,

Congrats on your new used purchase. I hope you have a blast with it!:thumbsup:
I'm glad to hear others are finding the thread useful.

Been riding the bike at least a couple times a week. Still riding rocky, hilly tight single track and rock crawler jeep trails. I know, I know, the 450X is far from the best platform for this. My WR250F feels so much lighter and easier to control through these trails, but I just love the 450X motor!!! Guess I'm a hot rodder at heart and I just love the sound and feel of the derestricted motor. Given a choice, I usually pull out the 450X.:ride:

I added some new footpegs to the 450X. I chose the IMS Pro footpegs. Dirt Rider Magazine did a comparison in the Oct 2011 issue. They are 50 mm wide, a medium width. Wider than the stock pegs, but not as wide as some of the 60mm "platforms". The look great! The stainless steel has a polished finish on the outside and the rest of the peg has a gray powder coat. The stock pegs were too narrow for me an looked cheap, cheap, cheap!!:worthy:

Unfortunately, they added another 0.25 lbs to the bike.:worthy:

Posted Image

Edited by Sofiedog, 24 October 2011 - 07:39 PM.


  • Sofiedog

Posted 28 October 2011 - 07:02 PM

#79

Rear MAXXIS Desert IT has run it's last lap. It's pretty worn and is chunking. It weighed about 14.5 lb when new (110/100-18), and now weighs about 13.0 - 13.5 lb. Totaled up my ride log. Looks like I got about 425 miles on it. Looks like I installed it mid-August. Had about 18 rides since then, averaged about 24 mi per ride.:busted:


Posted Image

Installed a new Dunlop MX51. New tire weighs about 13.5 lb. It's a full 1.0 lb lighter than the MAXXIS. Can't wait to ride it this weekend. Nothing better than new tires. Bet this baby hooks up well.:busted:
Probably won't last long. Knob pattern isn't very dense. Not sure what tire I'll try next.


Posted Image

  • Sofiedog

Posted 29 October 2011 - 01:08 PM

#80

Sofiedog went for a 15 mile ride through granite infested trails this morning. Sofiedog inspects brand new MX51 with one ride's use on it:


Posted Image

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Sofiedog says "That bites!!!" This MX51 may be a great MX tire for those MX wussy's, but it won't last a month out here where the real dogs ride.

Posted Image


Got the bike washed. Need to order a new rear tire. What should I try next? I can get a Dunlop D739AT for 88.99 at Motorcycle Superstore. They also have a pretty beefy looking Bridgestone M22 Hard Terrain tire for only 63.99

Think I'll take a nap...


Posted Image

Edited by Sofiedog, 29 October 2011 - 01:58 PM.





 
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