Pro X Steel Intake Valve/Spring Kit

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Pro X Steel Intake Valve/Spring Kit
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Pro X Steel Intake Valve/Spring Kit

Our Price: $64.00$129.56

MSRP: $131.82 - $196.20 - You save up to $67.82 (51% off)

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Additional Videos

How to - replace the valves on your motorcycle or atv

How to - Four-Stroke Top End Rebuild (Part 2)

Pro X Valve Spring Kit

How to - Adjust Valves On A Motorcycle/Atv

RM YouTube Channel

Details

    Sick of doing valve adjustments yet? You’re not alone. Pick up a Steel Intake Valve Kit from Pro X for some valves that will last a seriously long time without giving up any performance.

    Pro X manufactures these exhaust valves so close to OEM specs you can reuse the same retainers, bases, and seals without any modifications. It all begins with a 21-4N stainless steel valve that is black nitrided for an unprecedented combination of core strength and surface friction reduction. Then comes the chrome vanadium, heavy duty springs built specifically to handle the extra weight of steel valves. Even at high rpms these springs hold a tight seal so your valves won’t flutter or float even after seasons of being heavy on the throttle.

    Experience what it’s like to spend your time riding instead of checking clearances with a premium set of components in the Pro X Steel Intake Valve and Spring Kit.

    Specs:
  • More durable than OEM
  • Reduced clearance adjustment
  • Pro X tappet sets available
  • 21-4N stainless steel valves
  • Kit comes with all valves and valve springs
  • Valves have black nitride coating
  • Heavy duty chrome vanadium valve springs
  • Fully compatible with OEM retainers, bases, and seals

Pro X Steel Intake Valve/Spring Kit Reviews

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
5.0 / 5.0
30 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
29
1
0
0
0
Value
4.9 / 5
Durability
4.9 / 5
Fitment
5.0 / 5
Performance
4.8 / 5
Recommend it?
Yes (15)
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
-m-2004 SUZUKI RMZ250--fit great easy installation im very pleased with the performance and durability
February 2, 2018
Biggsville , IL, US
Age: 15-24
Purchased
1 month ago
Gender:
Male
Weight:
131 - 160 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Over a year and going strong
Did my top end rebuild almost 18 months ago, I never noticed a difference with the steel valves over titanium. Checked clearance and still spot on.

-m-2009 YAMAHA YZ450F--
January 12, 2018
Gilbert, AZ, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
pro x steel intake kit
I have used many of these over the years with no issues what so ever. Always fit always works. No difference in performance!

-m-2004 HONDA CRF250X--
January 3, 2018
goleta, CA, US
Age: 45-64
Purchased
2 months ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Never had an issue with these!
I've put these in plenty of my own bikes, and also my friends bikes. None have ever had any problems.

-m-2014 KAWASAKI KX250F--
December 22, 2017
Youngstown, OH, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
131 - 160 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Great price and a solid upgread
Tired of adjusting them darn valves on your hondas these are the way to go
December 16, 2017
Y town , NV, US
Age: 25-44
Purchased
8 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
4 / 5
Durability
4 / 5
Fitment
5 / 5
Performance
4 / 5
Recommend it?
Yes
pro x steel valves
I have been installing these in a lot of crf450r an they last for ever. Never had a issue yet with pro x items.

-m-2005 HONDA CRF450R--
October 27, 2017
manchester, KY, US
Age: 25-44
Purchased
4 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Parts work great my bike runs like a champ now and I'm very satisfied with pro x
May 2, 2017
Ventura , CA, US
Age: 25-44
Purchased
11 months ago
Gender:
Male
Weight:
221 - 250 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Great valves
Great replacement after your titanium valves go, comes with the springs so your ready to go
April 26, 2017
North Branch, MI, US
Purchased
10 months ago
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Awesome product, installed these bike starts and runs as it should. Great pricing as well.
April 25, 2017
Quincy, IL, US
Purchased
10 months ago
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
good stuff
I'm just writing this review to let you know that you should measure the valves before installing them. One of them is a different length then the other two, and that one goes in the middle. It would be helpful is prox put a mark on them to indicate which valve goes in the middle. minor inconvenience.

-m-2009 YAMAHA YZ450F--
April 20, 2017
45069, OH, US
Each question or answer submitted enters you into a:
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 5 questions Browse 5 questions and 22 answers
Does this kit come with all 4 valves and springs?
A shopper on Jan 17, 2017
BEST ANSWER: The kit is for either the exhaust or the intake valves and only comes with two springs. If you want to change all four valves you have to buy two separate kits. I love these valves and recommend you have the seats ground by a machine shop when you install them. Worry free now for a 125 hrs and starts right up every time I kick it!!!!
The valves on my 2006 crf250 have a spring inside of a spring and seem stronger. Is that normal? Do I still use the prox springs? The valves I took out are kpmi.
Nick H on Nov 23, 2017
BEST ANSWER: yes the springs are matched up to the weight of the valve being used so it controls the action of the valve landing on the seat so it doesn't bounce off it and release cylinder pressure but not have to much pressure to strain the valve train and rob power from the engine.
Does this kit come with keepers? Can the OEM ones be used? Should they be replaced with new valves and springs?
SAM B on Jan 9, 2018
BEST ANSWER: Hey sam
The kit don't come with the keepers , yes the old ones can be used , I have on hundreds with never a problem , they don't wear out ,be sure not to mix them with the exhaust side they are different , I highly recommend that you recutt the valve seats to get the full life out of your new intake valves , exhaust is generally fine
I have read that the SS valves require a heavier sprint to compensate for the weight dif between SS and Titanium. Are these springs set for the SS valve?
Scott B on Dec 31, 2016
BEST ANSWER: The springs included in this kit are weighted specifically for the steel valves that come in the kit.
Hi, the price refers to one valve+spring o the 3 intake valves+spring kit? Thanks
A shopper on Sep 23, 2016
BEST ANSWER: The price shown is for all the intake valves and springs that your machine requires, whether it be two or three.
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