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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

Our Price: $147.56

MSRP: $158.00 - You save up to $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

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
4.8 / 5.0
38 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
33
4
0
1
0
Value
4.5 / 5
Durability
4.6 / 5
Ease of Installation
4.9 / 5
Fitment
4.9 / 5
Performance
4.7 / 5
Recommend it?
Yes (36)
No (1)
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
9 months 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
5 months 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
5 months ago
Gender:
Male
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
5 months ago
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
v force review
Great part. Smooth ride and crisp sound. love it. would recommend to anyone.
User submitted image
Added Apr 17, 2019
April 17, 2019
Mississauga, ON, CA
Purchased
5 months ago
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Excellent fit and finish, great product and performance!
April 4, 2019
Sacramento , CA, US
Age: 45-64
Purchased
7 months ago
Gender:
Female
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
4 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
peace of mind
i don't know if this actually changed the overall performance of the engine but its very high quality and gives me peace of mind since the stock reeds are known to fail. I have it paired with a lectron carb and seems to work well.

-m-2018 KTM 300 XC-W (E-Start)--
March 23, 2019
Everett, WA, US
Age: 25-44
Purchased
8 months ago
Gender:
Male
Value
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
easy install
i noticed a definite improvement over the stock reed valve. i haven't had it long enough to comment on durability'

-m-2018 KTM 300 XC-W (E-Start)--
February 25, 2019
painesville, OH, US
Age: 25-44
Purchased
7 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
If you want a snippier feel and better response install this baby.
February 25, 2019
stoutsville, OH, US
Age: 45-64
Purchased
7 months ago
Gender:
Male
Weight:
161 - 190 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
VFORCE 4
Nice product, high quality fast shipping

-m-2018 HUSQVARNA TE 300--
February 9, 2019
Stayton , OR, US
Age: 45-64
Purchased
7 months ago
Gender:
Male
Weight:
>281 lbs.
Height:
>6'7
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 7 questions Browse 7 questions and 28 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.
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 .
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.
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.
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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