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Trail Tech Flywheel Kit
Trail Tech Flywheel Kit

$ 174.99 - $ 189.95

Description See Also: 2 Reviews 7 Questions Fitment Part Numbers
Item #TRH001Z

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2 Reviews
4.5 out of 5 stars
5 Star   1 4 Star   1 3 Star   0 2 Star   0 1 Star   0
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All Reviews
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Delivered quick and easy install

Quick 45 minutes install with a flywheel puller. Easy directions. delivered quick. Seems to smooth out power nicely down low, easier to start. Im a trail rider and look forward to this mid.

Verified Purchaser
NW Washington
Durability 4/5 Ease of Installation 3/5 Performance 4/5 Power 5/5 Style 3/5
TrailTech 33oz Flywheel

Nice machined heavy flywheel. Works as advertised and smooths out power down low. Great for single track woods riding. First flywheel I received was defective and more then likely indexed wrong. After a quick call to TrailTech I received a RMA number and had a new replacement mailed to me after they received my defective flywheel.

7 Questions
Answered:   6
Not Yet:   1
Q: I have a 06 crf450r how many oz would a 15oz flywheel add over my stock one?
17 days ago
Trevor Gearhead
Top 10
17 days ago
A: This adds 15 oz over the stock weight
Zen Pro
Q: Which weight would be ideal for semi hard dirt drag racing for the CRF450R stroked engine, would like a good balance of a good launch and able to hit max rpms as fast as possible. Currently the motor has a lot of torque due to the stroker crank, any ideas
3 months 22 days ago
Top 10
3 months 22 days ago
A: Typically a heavier one would be ideal for hard dirt track racing. +15oz would be a good start, however not guaranteed that it will give you the power you're looking for.
Q: Which weight best for trail riding
1 year 1 month ago
I have an '04 Honda CRF 450. The options are 15, 21 or 33oz flywheel. I'm not sure which one to order for trail riding. Please help.
Top 10 Contributor
1 year 1 month ago
A: I would go with the 15 oz.
Q: Will this fit in a stock cover or does it include an aftermarket ignition cover
1 year 10 months ago
Q: 2008 crf450r
Over 3 years ago
Does this kit, include a new gasket? Also, I am considering this flywheel because I stahl my 2008 crf450r on tight trails and am hoping this will help. What is the stock flywheel weight on my bike and what would be the best choice of weight for the new one? Thanks.
MotoSport Staff Expert
Over 3 years ago
A: No it would not include the gasket.
Q: I have a 2008 Honda CRF250R and would like to add 9oz. which flywheel do I buy as they are starting out at 21oz.
Over 3 years ago
MotoSport Staff Expert
Over 3 years ago
A: The 25oz would be +9oz over stock for your 2008 Honda CRF250R (6141L-25). Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Q: Are any mods needed to the ignition cover?
Over 3 years ago
I've heard certain flywheel weights are too big to clear the cover and modifications are needed. does this 33oz flywheel weight for my 03 crf450r clear the cover fine? and what is the stock flywheel weight? when i click between 15oz and 33 oz they both say + instead of one minus and one plus
Expert MotoSport Staff
Over 3 years ago
A: No modifications would be needed on your 2003 Honda CRF450R. This would be +13oz (6140L-35) and +11oz (6140L-33). More info and instructions can be found here:

Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.

See all bikes that this part fits...

See Fitments
# Part Numbers
Product Variant Manufacturer Part #
15 oz 6140L-35
27 oz 6141L-27
29 oz 6141L-29
31 oz 6141L-31
25 oz 6142L-25
29 oz 6170-29
35 oz 6170-35
35 oz 6171-35
26 oz 6320-26
33 oz 6320-35
23 oz 6350-23