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Pro Circuit High Compression Piston Kit
Pro Circuit High Compression Piston Kit

$ 281.99 - $ 415.99
11% Off - Save up to $34.99

Item #PRC0037

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13 Reviews
4.9 out of 5 stars
5 Star   12 4 Star   1 3 Star   0 2 Star   0 1 Star   0
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All Reviews
Verified Purchaser
Dresser, WI, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Pro circuit piston kit

You get what you pay for would highly recommend this kit

Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5

williamsport pa
High compression

This product worked great. Noticable power gain. Easy to install. I will buy again if i ever need a new one

clermont fl

Great product

Lincoln, CA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Worth while

Nice kit, easy to install, little tuning adjustments were needed.

Staley, NC
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Awesome

I bought this top end kit for my 07crf250r after the bike got hot and burned up the rings. It had a high compression piston already so I wanted to keep it the same. I had never been into my bikes engine until then. Following the shop manual along, the installation was a breeze. The bike pulls harder than before, and throttle response is amazing. If you want your bike to have a little extra pep then this piston is for you. If I had to rebuild another I would use this top end kit again. No complaints here! Lovin it!

alb new mexico
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Didnt get a pc

i blew a head gasket and decited to put in this kit cuz it comes with everything...i had put this same kit in a year ago, but when i pilled the piston out it was a JE not the PC. maybe this new kit will have the pro comp piston and not the JE.

Carson City, Nv
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Good investment

I put this piston in my CRF450R. That thing rips, all RPM ranges. If you can't get a hole shot with this in your bike, its the pilots fault not the bikes. It does tend to be a little bit more sensitive about the octane of the fuel though.

Top 1000 Contributor
wewahitchka florida
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Awesome

this piston is incredible it adds alot of power and is really reliable it fits perfect and i love the power gains it gave my bike its crazy how just this piston helps your engine

Lawrence, KS
Great power for the $

Installed and noticed instant power gains. Good bang for the buck. Made the bike a little harder to start though. But still very satisfied.

See 3 More Reviews
31 Questions
Answered:   30
Not Yet:   1
Jackie Moon
Q: What’s the compression ratio for this piston ? 
5 days 6 hours ago
Dan Gearhead
Top 25
5 days 6 hours ago
A: Compression ratio for the Pro Circuit High Compression Piston Kit will vary depending on application.
Kxrider
Q: If I get this for my 2012 kx250f would I need to get anything else or can I install and start ripping. Also if I put this kit in would I need to adjust anything besides the cam and cam chain
18 days ago
robert
Top 10
18 days ago
A: This will be everything needed for the install.
Chris54
Q: Does this kit come with the Teflon coated wrist pin?
4 months 14 days ago
rknight
Top 25
4 months 14 days ago
A: Yes the wrist pin is included
Nate
Q: What would the compression ratio be on the CRF150R after installing this height-compression piston?
1 year 11 months ago
Note: The rest of the bike is stock and I already know the stock compression. I would to know that the new compression ratio would be. Thanks.
bq365
Q: I Have a 2016 CRF150R and I was wondering could if I could use Race Fuel with this Piston?
1 year 12 months ago
MotoSportExpert
MotoSport Staff Expert
1 year 12 months ago
A: Yes we do recommend race fuel. For 4-stroke applications we recommend using VP Race fuel U4.4, and for 2-strokes we recommend VP Race fuel C12. If you aren’t going to use Race fuel we do recommend you use a higher-octane pump fuel.
Londonn
Kx2007 450f
Q: I have a 2007 kx 450 do I have to bore or modify culver to install or jus install it
Over 3 years ago
MotoSportExpert
MotoSport Staff Expert
Over 3 years ago
A: No you would not need any additional modifications. Pro Circuit High-Compression Pistons work equally well in stock or modified engines giving you more power at every rpm.
Nick
Q: CRF150R Compression
Over 3 years ago
Whats the compression ratio if im buying this for my CRF150R? The stock compression for the 150R is 11:7:1
MotoSportExpert
MotoSport Staff Expert
Over 3 years ago
A: Unfortunately Pro Circuit does not provide specs on this piston. I would contact them directly at 951-738-8050.
murkopolo82
Q: Is this available for '09 klx250s
Over 3 years ago
MotoSportExpert
Top 1 Contributor
Over 3 years ago
A: No. This is not available for your KLX250S bike. We do offer other options in pistons that will be a stock replacement.
dclifton426f
Q: Is this piston kit compatible with a yz426f?, and if so what is the compression ratio?
Over 3 years ago
MotoSportExpert
Top 1 Contributor
Over 3 years ago
A: Pro Circuit does not list an application for the YZ426 bikes. We have other piston kits available for you. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
03cr85rb
Q: Could I but this instead of a top end kit for my cr85 if I wanna rebuilt my top end
Over 4 years ago
MotoSportExpert
Top 1 Contributor
Over 4 years ago
A: The Pro Circuit High Compression piston kits are for select model of machines. We have top end kits on our website for your CR85
1 - 10 of 31
Fitment

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See Fitments
# Part Numbers
Gasket Kit
Product Variant Manufacturer Part #
Pro Circuit High Compression Piston Kit C3288-EST
Pro Circuit High Compression Piston Kit C3187
Pro Circuit High Compression Piston Kit C7185
Pro Circuit High Compression Piston Kit C7908-EST
Pro Circuit High Compression Piston Kit C3395-EST
Pro Circuit High Compression Piston Kit C3233-EST
Pro Circuit High Compression Piston Kit C3057
Pro Circuit High Compression Piston Kit C3406-EST
Pro Circuit High Compression Piston Kit C3102
Pro Circuit High Compression Piston Kit C3054-EST
Pro Circuit High Compression Piston Kit C3175-EST
Pro Circuit High Compression Piston Kit C3268-EST
Pro Circuit High Compression Piston Kit C3136-EST
Pro Circuit High Compression Piston Kit C3267-EST
Pro Circuit High Compression Piston Kit C3047-EST
Pro Circuit High Compression Piston Kit C3270-EST
Pro Circuit High Compression Piston Kit C3549-EST
Piston
Product Variant Manufacturer Part #
Pro Circuit High Compression Piston Kit N/A
Pro Circuit High Compression Piston Kit RPS08250
Pro Circuit High Compression Piston Kit RPK09450F
Pro Circuit High Compression Piston Kit RPK10450F
Pro Circuit High Compression Piston Kit RPK09250F
Pro Circuit High Compression Piston Kit RPK10250F
Pro Circuit High Compression Piston Kit RPH09450F
Pro Circuit High Compression Piston Kit RPY08450F
Pro Circuit High Compression Piston Kit RPH04250F
Pro Circuit High Compression Piston Kit RPH08450F
Pro Circuit High Compression Piston Kit RPH09250F
Pro Circuit High Compression Piston Kit RPS14250F
Pro Circuit High Compression Piston Kit RPY10450F
Pro Circuit High Compression Piston Kit RPS05450
Pro Circuit High Compression Piston Kit N/A
Pro Circuit High Compression Piston Kit RPS08450
Pro Circuit High Compression Piston Kit RPY08250F
Pro Circuit High Compression Piston Kit RPY10250F
Pro Circuit High Compression Piston Kit RPH08150R
Pro Circuit High Compression Piston Kit RPY14250F
Pro Circuit High Compression Piston Kit RPH08250F
Pro Circuit High Compression Piston Kit RPS14450F
Pro Circuit High Compression Piston Kit RPH14250F1