Scary Fast Power Now!

Scary Fast Power Now!
Scary Fast Power Now!

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Description See Also: 26 Reviews 14 Questions
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26 Reviews
4.0 out of 5 stars
5 Star   16 4 Star   3 3 Star   1 2 Star   3 1 Star   3
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All Reviews
yzbrickhouse250 Verified Purchaser
western, va
Durability 5/5 Ease of Installation 2/5 Performance 3/5 Style 4/5

i did not notice any difference, its makes cleaning my carb that much more difficult. it seams fairly tuff though

Scary Fast Power Now!
east lyme, ct
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Style 5/5
Worth it

i had one on my 05 yz125, and when i got an 09, it migrated to that bike. this thing works. my 125 will deliver more power with less throttle and clutch. increases power when throttle is less than 50% open, and its noticeable. on a 125 its just wide open on moto, so id recommend it to woods racers who ride 125s

Saylor Top 500 Contributor
Tacoma, Wa
Durability 1/5 Ease of Installation 4/5 Performance 1/5 Style 1/5
Nothing great

I didn't notice any real difference. Also it some how got bent a little after about a year. I didn't like how it matched up to the carburetor. It didn't look free flowing. Your bike would be faster with a new back tire instead of this.

REVn Top 1000 Contributor
So simple!

was kinda hesitant on spending the money on this little piece but it really works! took out my dead spot in mid range

bang Top 10 Contributor
I Live in Adams TN Race 25 times a year Vet AM

No change anywhere it was SCARY HOW FAST $100.00 went

Panama City, Fl
Expensive, but it works

I was skeptical about this product. I installed it in my previous bike, a 2002 KTM 250sx, and the throttle response from 0-50% was greatly improved. I honestly couldn't believe it. If you have an older 2 stroke, like I had, it will make it pull off the bottom nearly as well as a new 2 stroke. I'm buying one for my new KTM!

Power wait a minute here it comes

This thing took all my bottom end power away

Durability 1/5 Ease of Installation 5/5 Performance 4/5 Style 1/5

The bike bogged then woke up but it didnt take off as fast. It acted like it needed bigger jets and acouple weeks after i put it in my bike it blew a piston. idk if the more air flow mad the bike run lean. But i really wouldnt recomend it for any one i know.

Durability 5/5 Ease of Installation 5/5 Performance 4/5 Style 5/5
Really good

i bought this system a couple of months ago and it did exactly what it says it does. it increases the power from bottom to mid range. one of the best products you can buy for 100 bucks for sure. this goes best with a K&N x stream airfilter

Salinas, CA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 4/5
U got to try it!

I installed this part on my 07 Outlaw 525 that had a slight bog on the low end, and it did exactly what they claimed it would! What you ask? It totaly woke up my low to mid throtle response, with a snappy and crisp response. I couldn't be happier with this product. Now my quad truely is SCARY FAST!!!!!!!!

Springfield, MO
Durability 4/5 Ease of Installation 4/5 Performance 2/5 Style 4/5
Not $100 worth of difference

I installed this hoping that it would Improve my throttle response on my yz 250f and did'nt see a change at all. adjusted the fuel mix screw and still no difference. Not impressed and wish I woulda spent my $100 towards some gear or a header.

Suzuki137 Top 500 Contributor
Durability 5/5 Ease of Installation 3/5 Performance 4/5 Style 5/5
Really noticed a difference

its pretty good for 100 bucks, i noticed way better idle and a deffinit power boost, hardest part was not gettin it in the carb, but gettin to the carb itself. but overrall pretty awesome

Durability 5/5 Ease of Installation 4/5 Performance 5/5 Style 3/5


I notice a big difference on my lowend torqe. It holds up great, dosn't move. The instalation was kinda hard, The directions don't say this but if you take the whole subframe off u have a great view of the back of the carb it slides in with ease. I would recomend this to anyone. Installed on my kx250f.

teambuck Top 250 Contributor
missoula mt
No difference

i didnt feel a big difference in my bike. i only got the filter side one and not the set. might have lessened the low end cough a little but not much. installed on a 06 yz250f

Des Moines,IA

I purchased this couple of months ago and have plenty of time riding with and I have to say that this product says what it can do and backs it up with performance, I installed this on my 2007 RMZ 450 and could tell the difference right away. Great product everyone should have one that has a four stroke!

Scary Fast Power Now!
CR500HILLCLIMBER Top 1000 Contributor
Excellent Upgrade for Price!

I put one of these on my '04 CR250 and oh what a difference it made! I had my bike ported and polished by Pro Circuit, so it was snappy already, but this made it even more so. It made my bike much snappier and also gave me a little more meat in the mid-range(when paired with a V-Force reed valve).However, it also took away some of my top-end away even after I leaned it out some. Overall though, it is definitely worth the money!



MikeH Top 250 Contributor
Doylestown, PA
Great purchase

gives power to my bike where it lacks it and just plain adds more power to everywhere elso

Seattle, WA
Should have been installed from the factory

This product increased my low to mid respose, and took out the bog thats common with the 4 strokes.

Blanch Top 500 Contributor
Title says it all..!!!

Best and easy way to get more HP quick. Power results right away

See 6 More Reviews
14 Questions
Answered:   13
Not Yet:   1
Location: Spain
Q: Scary Fast Power Now for Mikuni VM?
4 months 12 days ago
Can you tell me a Scary Fast Power reference for the Mikuni VM 38, 40, 44 carburetor? Thanks you
Location: adelaide
Q: Just wondering how affective this part will be on my 2005 ktm 525 exc, i am looking for more throttle response and overall more snappy down low?
Over 3 years ago
How hard are they to install? How much do they cost with delivery to Australia?
MotoSport Staff Expert
Over 3 years ago Location: Portland, OR, USA
A: The Scary Power Now produces low to mid range torque increase on four strokes, so it should help your throttle response. It is very easy to install, it simply slips into the backside of the carburetor where the air boot connects.
Q: Does this give more power to 2 strokes or 4 strokes.?
Over 7 years ago
For example: the difference it makes to keep air filter clean on 2 stroke than a 4 stroke
Expert MotoSport Staff
Over 7 years ago Location: USA
A: These units have nothing to do with keeping the air filter clean.
Q: Is re-jetting the Carb a must do?
Over 7 years ago
what are the signs of this making my kx250f need rejetting? popping or smoke or what? Basically if i dont re jet what r the downsides
MotoSport Staff Expert
Over 7 years ago Location: Portland, OR
A: This shouldn't alter the air/fuel mixture enough to cause the bike to be rejetted. The experiences I've had with this item is making sure its seated properly in the carb, or otherwise you'll get an air leak causing the bike to not run properly.
Q: Is their two different ones one for each side of the carburator?
Over 7 years ago
Expert MotoSport Staff
Over 7 years ago Location: Portland, OR
A: Depending on the model of the bike, there's this power now and the Power now plus. The power now plus is not available for every bike.
Q: Starting?
Over 8 years ago
I have an '01 yz 426f and It's probably the hardest bike to start after I stall or it gets warm when I jsut pull it out of the shed it starts one kick. will this help cool it and make it easier to start warm? If not what will? any suggestions
MotoSport Staff Expert
Over 8 years ago Location: Portland, OR
A: The Power Now will not add any cooling or starting ease. There's not much you can do for the bike. It's just a bear to start.
Over 7 years ago
A: Get a hot start kit its a little lever that goes next to yyour clucth there nice
Q: Do you need to rejet the carbureator?
Over 8 years ago
MotoSport Staff
Over 8 years ago Location: P+RTLAND
A: It's recommended to double check the jetting after doing any carb mod.
Q: Will this work on a aftermarket carb on my 05 trx 450r, such as a FCR 43mm?
Over 8 years ago
MotoSport Staff
Over 8 years ago Location: Por+land
A: You would have to order the power now that is for whatever the carb originally goes on. I would contact Scary Fast for a solid answer on this one.
Q: Are you able to use the power now with the v force 3 reeds?
Over 8 years ago
i was woundering if it would be possible to use both
MotoSport Staff
Over 8 years ago Location: Por+land
A: I don't see why the two wouldn't work together.
Over 8 years ago Location: pittsfield
A: yes you can the power now connects to the airboot side of the carb and the vforce 3 system connects to the engine other side of the carb.
Q: What is the difference?
Over 8 years ago
What is the difference between the power now system, the power now plus, and the power now. Also what is best for a CR125 2007
MotoSport Staff Expert
Over 8 years ago
A: Here's a link to the manufactures website that describes in detail what each part does.
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