Eddie at Thunderhill / Fremont Cycle Salvage
cbr600rr, 03-06 click here

compliments Motorcycledaily.com
cbr929/cbr954 click here

Tired of looking for products for your 600rr only to find dearly (dearly??) priced HRC parts?
While some HRC parts are not made by anybody but HRC and are excellent parts - the number of parts that HRC sells that are applicable to USA style "stock engined" Supersport bikes, are very limited. (except at Daytona where it can occasionally be a manufacturers' free-for-all, ......).
Stacks might be one of those items??

If you race in 600cc class, have a trackbike or your Sunday Morning Ride bike - or just trying to get the most from your sweet 600rr and you can legally use these stacks. They are designed for use with the stock or BMC filter, stock cam set and stock or aftermarket exhaust.

These EC997 Eddy Current dyno designed stacks have no detrimental issues when used as a street bike in non race applications and were designed to be used on a stock engine and take about 20 minutes to install -

Adds 2-3 peak TRUE HP with stock cams and a real, "sold at a local dealership" available 600rr.

Excellent for countries that do not allow airbox modifications, such as Germany.

The picture shown are the actual items.

TUNING INFO
These stacks were designed to optimize intake system when using STOCK CAMS and work better than stock from idle to redline -

As in ALL proper engine tuning with aftermarket cams - the final, optimal cam timing settings are going to be finalized using an EC997 dyno - the only dyno that EASILY can take short "snapshots" of power.
When purchasing aftermarket cams - make sure you specify to the cam makers as to what you should put their cams in at when using Factory Pro 58.5mm stacks -
(Just kidding - I don't think that they will know - but I'm interested in what they say)
Best regards - Marc
 

James Stroud 2005 WERA Mid Central Region and Southeast Region Supersport Champion - Superbike Champion CBR600rr equipped with: Factory Pro V-Stacks (above) and Factory Pro Shift STAR kit CBR1000rr equipped with: Factory Pro Shift STAR kit Based: KC Powersports, Huntsville, AL 256 650-1177

CBR929/954 V Stacks / Induction system 

Honda
CBR954
Fireblade
page
 

 RA-VEL-H95-80

$249.95
set

Honda
CBR929
Fireblade

929/954 Superflares
Specially designed V Stacks from Factory Pro - Shorter for more upper mid and topend power - and more efficient - so - no loss of lowend and midrange when used with stock intake and exhaust cams.

Add your BMC RACE air filter and advance and fly!
and they SOUND awesome!

These are individually molded in lightweight and durable original appearing plastic and are designed to be used with stock camshafts. If you use aftermarket cams, you will have to retune the cam timing - especially with the intake cam. Maybe 4 degrees to the advanced side.

Adds 2-3 True HP in upper mid and on top when properly tuned.
(i.e." properly" doesn't mean "tuned to an a/f ratio")

What is it?
There's something that makes the susceptible ones of us to instinctually react to the sound of an engine at high rpm, running as perfectly as possible - on each and every cylinder -
It's that sound like Roger described as - "The sound of "rippin' sheets" going down a straight."

Something that makes a "not just good, but perfectly tuned" race engine sound that causes the hair on the back of your arms to rise up.......

First step it getting the intake tract lengths correct....... Then, intake cam set perfectly for that engine, then a matching exhaust for the cam settings, getting the ignition timing perfect at every rpm, eliminating ignition scatter, then, finally, providing the correct amount of fuel on each cylinder, at each rpm point...

That eliminates, except by luck, "Tuning to an A/F Ratio" as the final answer to tuning...
Tune to BEST POWER.
True HP

It's not that easy to make that sound...... 98% of engines at a racetrack won't even do that.
Kudos to the tuners who can consistently pull that off!
The are the stars in the industry.

Take the first step with as set of these power adding
Factory Pro V-Stax!

EC997 Eddy Current Dyno Developed  4 Gas EGA!
The dyno makes the difference!

Honda 929:

Easiest way to improve performance - Lucky someone thought of investing the time and energy and money to explore!  No loss of midrange!

These stacks are NOT to be confused with recent fireblade.org posts about a set of cut, unflared, stock 929 stacks.
And if someone can't properly tune a power commander for best power rather than to a bogus "a/f ratio" - that's just sad for the industry. That includes some "gods of Honda tuning".....
These stacks make more power - it should help top speed (unless you hit the rev limit already!!)

All the tests that we did with the stacks on the 929 were not even remapped - a dead, stock, 49 state ECU. So - if someone reports a power loss on a stock engine it's because the tuner tuned it right into a HP mixture hole - commonly a well meaning person "tuning to an a/f ratio" as derived from an O2 sensor.

"Cammed" or big bore, ported modified engines may and actually, probably will require a different length or more advanced intake cam due to quicker cylinder filling - That's the tuning puzzle!
Probably best to fine tune the intake tract length and then retune and retime the cam - That should / could end up with more advanced intake valve closing and an increase in cranking compression - i.e. just like milling the head for more compression. No warranties on user motivation!  :-)

The best of the best can make the best possible power - the others? They make excuses.....

The mean, nasty, but passionate,  tuner....
Marc -

True HP dyno chart

User feedback - click here