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V-Force 4R Reed Valve

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V-Force 4R Reed Valve
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V-Force 4R Reed Valve

176738

Our Price: $147.56

MSRP: $158.00 - You save $10.44 (7% off)

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Details

    The unique design of the V-Force reed valve system features double the reed tip surface over a conventional reed valve design. This has two major benefits: 1) The reed petals only travel half the distance as a conventional reed valve design to get the same airflow. 2) Because the reed petals only need to travel half the distance of that on a conventional reed valve design, there is a greater chance of them being fully opened as well as a better chance of sealing when they are "closed". A reed petal never truly "closes" in a classic sense, as it is always in movement. Consider this, an engine operating at 8,000 RPM results in a reed petal opening and closing 133 times in one second. This fact, sheds light on another V-Force advantage. Since the petals are only traveling half the distance, they generally last longer and they receive less wear than the reed petals on a conventional reed valve design.
  • Reed petal resin system, carbon fiber and lay-up.
  • Pre-curved reed petal ensures better seal at tip.
  • Wider reed cage for maximum airflow.
  • Combined reed tip area increased by 10.5% resulting in increased total air flow.
  • Airfoil shape added to cage tip to increase air velocity from outer ports.
  • Long reed stops added to progressively slow petal tip velocity, for increased petal durability.
  • Reduced frontal area of central wing by 15.6% combined with a more aerodynamic shape.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

V-Force 4R Reed Valve Reviews

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4.8 / 5.0
44 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
39
4
0
1
0
Value
4.5 / 5
Durability
4.7 / 5
Ease of Installation
4.9 / 5
Fitment
4.9 / 5
Performance
4.8 / 5
Recommend it?
Yes (42)
No (1)
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
It works
Racing a Husqvarna TX300. At 65 HRS I replace the reeds, the stock ones still looked good. The V-Force 4R Reed Valve give my bike more throttle response and more low end and more over rev

-m-2018 HUSQVARNA TX 300--
March 11, 2020
Huntington Beach, CA, US
Age: 65+
Purchased
3 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Carbon addiction
I know this reed system along my RK Tec head will give the TE 150 some super snappy and crisp throttle control, I have this on our Yz 250 and the YZ250x, love it over stock.
February 26, 2020
Kent, WA, US
Age: 45-64
Purchased
3 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Value
4 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
V force reeds
No complaints, product fit well and performs as advertised.

-m-2018 KTM 300 XC--
February 6, 2020
Cochrane , AB, CA
Age: 25-44
Purchased
4 months ago
Gender:
Male
Value
4 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
V-Force Reed Valve
Nice replacement for stock Reed Valves. Very Happy with product performance and easy installation.
January 21, 2020
Rio Rancho, NM, US
Age: 45-64
Purchased
8 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Excellent
Improve from stock. Higher revs and better flow.

-m-2019 YAMAHA YZ125--
October 9, 2019
Wasilla , AK, US
Age: 45-64
Purchased
8 months ago
Gender:
Male
Weight:
251 - 280 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Great OEM replacement
I tried replacing my OEM reeds but the cage was warped so I got this and works perfectly. I think it has a little more on the top end and slightly less on the bottom comparing to OEM but overall very happy.
September 20, 2019
OKC, OK, US
Purchased
over 2 years ago
Value
3 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Very well made
I put this on my 18 300xc to replace the notoriosly poor quality factory unit. The V Force is like a work of art.

-m-DIRT BIKE--
September 10, 2019
Pittsburgh, PA, US
Age: 45-64
Purchased
1 year ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Awesome
Night and day difference in fuel usage and performance. Sooooooo much better than stock KTM cage. Do it!
July 6, 2019
Pinelands, NJ, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Value
1 / 5
Durability
1 / 5
Ease of Installation
3 / 5
Fitment
3 / 5
Performance
1 / 5
Recommend it?
No
Couldn't tell a difference at all
Heard a lot of people raving about these so i figured I would pull the trigger. Bolted this up to my 30 hour 2019 300xc. Seems like a scam to me. I ride mostly single track so I'm not a hardcore racer or wide open throttle type of guy. Maybe I would feel a difference if that was the type of riding I did. I would definitely not buy this again. I also don't like how this product does not use a paper gasket to seal the surface between this product and the intake boot. It uses a raised rubber gasket built into the reed valve that I don't trust as much as a paper gasket than can be replaced.

-m-2019 KTM 300 XC--
May 25, 2019
Phoenix , AZ, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
4 / 5
Durability
4 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Very good reeds
Very easy to install straight out of the box. Very noticeable power increase on top and bottom end.

-m-2018 HUSQVARNA TX 300--
May 8, 2019
SHELBY, OH, US
Purchased
1 year ago
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$500 gift card quarterly drawing!
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 13 questions Browse 13 questions and 36 answers
Does this come with new gasket/s or do I need to get the OEM gasket/s separate?
Barry G on May 21, 2017
BEST ANSWER: This reed valve comes with a single gasket designed for this unit that fits between the engine case and new reed block. This reed block design does away with the gasket located between the carb side and reed block. No need for any OEM gaskets.
Whats the difference between the vforce4 and the vforce4R? (2014 ktm300) which would you recommend
Marty P on Mar 1, 2018
BEST ANSWER: The R has rubber tip sealing on reed tips, new reed cage design, manifold and air guide, I like it for the midrange boost it gives my 250.
Is any kind of sealant recommended for installing this reed cage ?
Francis M on Aug 7, 2019
BEST ANSWER: No sealant required. Use existing or provided gaskets as per the installation instructions.
My 2017 TX300 has a JD Jet kit from previous owner, however after installation of the new VForce Reed, will I need to re-jet it again?
William P on Mar 17, 2018
BEST ANSWER: I have the 2018 TX300 that I've installed the JD jet kit and later installed a vforce reed , high compression head ,knarley pipe and the jetting is still good.Check the color of your plug from time to time to see how lean or rich your running .
Should i choose vforces 3 ou 4 or 4r for my 250sx
Head mod
Carb mod
Porting ?
Alexandre C on Mar 21, 2020
BEST ANSWER: I believe the V Force 4r was specific to the Ktms and Huskys. It cleaned up the jetting on my 300xc considerably. The stock reeds were shot at 15 hours. I have not done the other mods.
whats the difference between vforce 3 reeds and vforce4r reeds for a 2008 yz125?
John H on Apr 1, 2018
BEST ANSWER: Here is the tech spec for this product.

Key Features on the V-Force 4 Reed Valve System:
All-new reed petal resin system, carbon fiber and lay-up.
Pre-curved reed petal ensures better seal at tip.
Wider reed cage for maximum airflow.
Combined reed tip area increased by 10.5% resulting in increased total air flow.
Airfoil shape added to cage tip to increase air velocity from outer ports.
Long reed stops added to progressively slow petal tip velocity, for increased petal durability.
Reduced frontal area of central wing by 15.6% combined with a more aerodynamic shape.
Dose this work on yz 250?
Jared G on Apr 16, 2020
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application.
Will this fit on a 1998 ktm 300 exc?
A shopper on Apr 8, 2020
BEST ANSWER: Unfortunately, your machine is not listed so this will not fit.
Hello,
I see this says it fits a 16 TC 125, I imagine it is the same for my TE 125?
Thanks!
A shopper on Jan 21, 2020
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application.
Does this fit on 2019 KTM 300 xc-w TPI model?
Jon Dirk L on Nov 5, 2019
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application.
When are they going to have them for 2001 cr 250r??
Noah S on Oct 1, 2019
BEST ANSWER: Unfortunately, we do not know when we will have this available for your machine. However, I will forward this along to my purchasing department for you.
Is the new V4R26 model for the 2017/18 TX300?
Lorne D on Dec 3, 2017
BEST ANSWER: Yes this is the V4R26 model reed valve and will work on the 17 and 18 TX300.
They fit on my 300 xc w 2018????
Wilson m on Nov 6, 2017
BEST ANSWER: According to our machine selection drop downs, it'll fit your bike just fine.

To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2018 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
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