GYTR High Compression Piston

GYTR High Compression Piston
GYTR High Compression Piston

$187.00 - $207.86
10% Off - Save up to $23.09

Description See Also: 2 Reviews 10 Questions Fitment Part Numbers
Item #GYT000K

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2 Reviews
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All Reviews
kuda Verified Purchaser
Durability 5/5 Performance 5/5 Power 5/5 Style 5/5
Best Purchase Ever

best performance part for my quad

Mill Creek WV
Durability 4/5 Ease of Installation 3/5 Performance 5/5 Power 5/5 Style 4/5
A Must Have

Just put this in my 2009 YZ250F an right after I got the bike back together and running I could tell a huge difference in the power. It almost threw me off the back because I wasn't expecting my bike to accelerate that much faster. The only down side is the higher cost of the gasoline you have to run, but if your serious about racing this is a must have!

10 Questions
Answered:   8
Not Yet:   2
Location: Vermont
Q: GYTR recommends a new oil sprayer for my 2015 250f, can this be installed without splitting the cases?
4 months 26 days ago
Location: Dover, DE, USA
Q: GYTR High compression piston?
Over 5 months ago
I,trying to this and I want to do a full rebuild and to a two-stage cam on it would I have to re-shim it
Q: Would I need to get a programmer to run this piston in a yfz 450r?
2 years ago
MotoSport Staff Expert
2 years ago
A: Most likely for optimum performance you will need to reprogram your YFZ450R when installing the GYTR High Compression Piston.
Q: Would it be bad to run higher than 100 octane fuel with this piston or do I need to run 100?
2 years 4 months ago
I currently use 110 octane race fuel for the setup I have now and it is easy for me to get. Would I have to switch to 100 octane?
Expert MotoSport Staff
2 years 4 months ago
A: The GYTR High Compression Piston Requires use of minimum 100-octane racing fuel.
Location: Austr
Q: Will this piston fit a 2014 YZ450?
2 years 6 months ago
MotoSport Staff Expert
2 years 6 months ago
A: No, unfortunately we do not have the GYTR High Compression Piston for your 2014 Yamaha YZ450F at this time.
Location: Norway
Q: Can i use 98octane?
2 years 9 months ago
Can i use 98octane insted of 100octane? And how much hp can I expect to gain on my 2013 yz250f?
Top 1 Contributor Top 50 Contributor
2 years 8 months ago
A: It is always recommended to use Premium fuel with a GYTR or any other brand High Compression Piston. Depending on the compression ratio and other factors, you may need to use a mix of race gas to eliminate detonation.

As a general rule of thumb, a higher compression piston will give you more low end power in trade for higher RPM power.
Q: Do i need to install new cams with the installation of this product?
2 years 10 months ago
MotoSport Staff Expert Top 1 Contributor
2 years 10 months ago
A: No, you don't have to run aftermarket camshafts.
Location: O'Neill, NE 68763, USA
Q: Dont these require high compression Gytr Gaskets?
Over 3 years ago
I need to replace the gaskets around my cylinder while I'm In my motor and I Thought these required a high compression GYTR gasket set and i can not seem to find it on the site. I cant find any gaskets that fit the stock Bore. they are all for big bore kits. Im shopping for my 2009 YFZ450R fuel injected model.
Expert MotoSport Staff
Over 3 years ago Location: Portland, OR, USA
A: You should be able to use the OEM gasket kit or any aftermarket gasket kit with this piston. I cannot find anything on this kit that says it would require a specific gasket kit for the higher compression.
Q: Could I run 91 octane gas?
Over 4 years ago
MotoSport Staff
Over 4 years ago Location: Portland, OR, USA
A: Yamaha recommends running 100 octane fuel with this piston kit. You can mix a 110 race fuel 50/50 with your 91 octane and be okay. Basically compression ratios between 12.5 and 13.1 will start to require 100 octane. If it is not used then your motor can start to pre-detonate during the compression stroke which can cause pre-mature engine wear, and can lead to piston failure.
Location: Chile
Q: What happens if I use regular 97 octane gas with this piston kit in my yfz450r?
Over 4 years ago
GAS cuestion
MotoSport Staff
Over 4 years ago Location: Portland, OR, USA
A: Your YFZ450R with this piston kit installed should run just fine with 97 octane fuel.
1-10 of 10
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See Fitments
# Part Numbers
Product Variant Manufacturer Part #
GYTR High Compression Piston 17D-E16A0-V0-00
GYTR High Compression Piston 33D-E16A0-V0-00
GYTR High Compression Piston GYT-5D305-00-00
GYTR High Compression Piston N/A
GYTR High Compression Piston 1SLE16A0V000
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