RM-z450 / rmz450

08-18

Cross regimen products - direct from AMA and WERA Pro level roadrace to Pro Level offroad.



Pro Shift Kit
(arm and spring)

Hi Marc, I got the Pro Shift kit installed on my 10’ RMZ 450 and at the same time i had the transmission gears and other parts cleaned and polished up. I was able to hit the track and there is a definite and noticeable improvement over stock. So much it will take a few rides to get used to the ease of the shift, thanks so much for a great product. Cheers.
Warren L

 

Pro Shift Kits


Microbearing Shift Detent Arm
*Hybrid CERAMIC*
Tough Steel races with elegant ceramic balls

SHFT-ARM-S26-CERAMIC
RM-z450 08-18
 Microbearing Detent Arm
replaces Suzuki: 25350-28H00

$99.95

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2.

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SHFT-ARM-S26-STEEL BEARING

RM-z450 08-18
 Microbearing Detent Arm
replaces Suzuki: 25350-28H00

$79.95

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2.
 


F-Pro Microbearing Detent Arm

Tortured by false neutrals and missed shifts? 
Damage to gearbox caused by missed shifts?

Part of the shifting problem is that there is just too much friction in the shift mechanism. Factory Pro produces a detent arm with a slick rotating ball bearing instead of a stock scratchy riveted disc. Had anybody asked, we would have fixed it in 08.

Reduce ugly and unattractive friction for virtually perfect shifting.
Make your transmission "snick" into gear and stay in gear.

Reducing the rotating friction allows the shift mechanism to rotate quicker and get the gear dogs more fully engaged - so they stay engaged under part throttle (as in when you are 15ft in the air over a set of triples).

This arm and recalibrated F-Pro spring are the solution in helping the 450 develop bulletproof shifting.

The tough, steel raced, Hybrid Ceramic Microbearing arm is the ultimate in friction reduction for this use. The STD Steel Microbearing arm is 98% as good as the Hybrid  (and $10 less expensive) - and both are way  slicker than the stock riveted roller.

 Installation: The detent arm and shift spring sit right under the clutch basket - so, it's just R&R the clutch basket to install.  About an hour.

"No missed shifts"

Factory Pro Tuning

415 491-5920

marc@factorypro.com

 

   2010 rmz450 Pro Shift Kit
(arm and spring kit)

Hi Marc, I got the Pro Shift kit installed on my 10’ RMZ 450 and at the same time i had the transmission gears and other parts cleaned and polished up. I was able to hit the track and there is a definite and noticeable improvement over stock. So much it will take a few rides to get used to the ease of the shift, thanks so much for a great product. Cheers.
Warren L

 

      Hi Marc

2015, April - I have now tried the 3 parts from you guys, 10 hours of winter riding, 5 hours summer riding.

 RM-z450 08-15 Microbearing Detent Arm
 - F-Pro Competition Shift Spring -
 Adjustable Center Shift Stud

Before I have at least 1-3 missed shifts every single time out riding.
Now I have not had one single missed shift after I installed the parts.. SUPER , bike feels like new, super fast shifting, and I can focus on other important things out riding, not thinking about changing gear proper so I don't miss the gears.. 

THANKS! I have already recommend this products to all my friends. :) 

/Mikael

 

    Works great!  It was easy to install.    S. Berger (rmz250)

     It's freggin awesome. Night and day difference.. I raced this weekend.. 4 motos and never a miss shift or false neutral   Dec 2013

  I had the new detent spring installed and also went with the Factory Pro arm - it doesn't have any slop/play like the stock unit does. Rode it today for the first time and it shifts like my 450 now. Not a single missed shift. That's the best spent mod I may have ever done,    Dec 2013

   I initially thought the Factory Pro arm and spring was very pricey, but what I learned, this is all these guys do. They have a niche and they do it well.
What I can say is this was one of the better mods I've done to a bike. My shifting is so predictable now. TDC51  Dec 2013

   I give it a 10 out 10.

 

Submit testimonial

Competition Shift Spring - help eliminate missed shifts

 
F-Pro Competition Shift Spring 

pn: Z95-S28-0601
(13-16 450 must use the Microbearing Detent Arm and the F-Pro spring)
The stock 13-16 spring is too strong and causes wear.

$39.95

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2.

 



F-Pro Shift Spring

Miss fewer shifts. Fewer false neutrals.

Suggest the Arm and the Spring for best  results.

Helps speed up shifting because the shift drum rotates quicker between shifts. Combine with the F-Pro Microbearing Shift Detent Arm for the sweetest results.

Our spring is SOMEWHAT stronger than the stock spring (08-12 450) - not like the overly stiff 13-16 450 stock spring.


"No missed shifts"
Factory Pro

marc@factorypro.com

Adjustable Center Shift Stud     $24.95

pn: shft-stud-8600


07-15 rm-z250
08-15 rm-z450
(replaces 25671-10H00)

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2.
 
 

If the shift shaft fingers aren't centered on the shift shaft, Factory Pro has the fix.

To get equally good up and downshifting - you need to control how the shift shaft grabs the detent star posts.

It's a special offset "centering" stud, adjustable by almost 1mm.
More experienced mechanics will recall when almost all transmissions were equipped with parts to center the shift shaft fingers. That allowed the engine builder to set the shift shaft to exactly in the center for the best possible shift performance.

Install the stud with enough threads exposed for a locknut.
Turn stud till shift shaft "fingers" are centered on detent STAR pins as per the sample picture below.
Tighten down the locknut.
Recheck indexing.

   

 

Pro Shift Kit Installation

rm-z250 08-13
rm-z450 07-12 (13?)

tools:
std 27mm 1/2" socket
1/2" air or electric impact wrench
Suzuki service Manual
Here is the start.

Thanks Lance, of Petaluma, CA for the pics and first retail install

water pump hose
kickstarter
brake pedal
cover
5 pressure plate screws
27mm socket for clutch basket
clutch basket  
shift shaft
shift pawls and springs
 
center shouldered shift star hold down bolt
Shift star

remove old shift arm and spring

install new microbearing detent arm and F-Pro spring
 

 

 

 

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New and improved Suzuki Teka SFI  2

with new TPS display and "MMT" Memory Module Tuner

Finally - Quick, easy, cost effective Suzuki tuning with no expensive "add-on boxes"
Suzuki cruisers and sportbikes

Please click here for more info

Contact Factory Pro
M-F, 9am - 5pm, Pacific time, -7 or -8 GMT

800 869-0497
 USA and Canada

415 491-5920

parts information
 info@factorypro.com

EC997 dynamometer information
info@factorypro.com

Product Support /Tech SECTION
click here

 

Mailing / Shipping address:

Factory Pro
179 Paul Drive
San Rafael, CA 94903
USA

And most importantly
Restart back at the HOME page and click on the red box in the top left to find the bike that you want parts for...
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The extension of the laboratory for engines of the Swiss Federal Institute of Technology was completed in about 1935. Its architect was Rudolf Otto Salvisberg (1882-1940). He had a successful career in Berlin but returned to Switzerland after the advent of the Nazis. His architectural style was somewhat similar to that of Erich Mendelsohn. The staircase of the laboratory is in normal use but well preserved.
Edited to the tunes of Chemical Residue by Herbie Hancock.