YFZ450R "E+" Series Ported Race Head Service - Customer Provided Head

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On sale: ~~$1,475.00~~ $1,325.00

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Part Number: 513-2

Availability: In Stock.

Shim Camshafts *

Quantity

Description

Our "E" series product line offers exceptional performance while keeping an eye on the wallet. This is absolutely a high-performance head with components hand-selected and vigorously tested to provide the best blend of performance and affordability.

*This option is for a customer provided head. The lead time for this work is about 5-6 weeks after receiving your head at our facility. You are required to ship your head for this product option. For a reduced lead time, we also sell new OEM heads with this same service already complete*

This "E+" head service includes:

Full inspection of the head condition - the base price of this service includes all listed below, but does not include replacing worn out guides and seats. If we find that your head needs new seats and or guides, an additional cost of up to $385 may be required
The head is fully media blasted for cleaning
We weld the AIS hole shut before porting on the exhaust side
The same "big" porting as our top end race heads all done by CNC to guarantee every head is to proper specs.
Sand roll finish the ports after CNC porting to smooth out the machining marks for an ultra-smooth port
5 Angle High Performance CNC valve job to cut seats for oversize valves and optimal flow
Check flatness of head and surface grind head flat
Oversize stainless valves (much more economical over titanium and will provide exceptional valve life)
Heavy Duty performance valve springs specific to steel valves (reduces valve float and increases durability)
Titanium Valve Retainers
Precision Steel Lower Collars
New Valve Stem Seals

This head is returned complete and assembled. You will need to shim the valves for your camshafts. If you would like us to also shim the valves, please select that product option and send your cams in with the head or purchase new cams from us.

*This head can accept a max valve lift of 0.380" on the intake and exhaust cams. It is also important to utilize a piston that is cut to accept +1 valves or greater. If you need direction on cam selection, please contact us as we also offer a wide range of camshaft options.*

YFZ450R "E+" Series Ported Race Head Service - Customer Provided Head

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