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Factory Effex The Bump Seat Foam
Factory Effex The Bump Seat Foam

$20.99 $24.99
16% Off - Save $4.00

Description See Also: 10 Reviews 6 Questions Fitment Part Numbers
Item #FXX000I

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10 Reviews
4.8 out of 5 stars
5 Star   8 4 Star   2 3 Star   0 2 Star   0 1 Star   0
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All Reviews
Verified Purchaser
Works wonders

It's extremely easy to install and works wonders for my rider in the corners.

Verified Purchaser

Verified Purchaser
Smithfield, UT
Love it!

i love this bump in my seat! i put it right where i want it and it works great! no shaving the seat down or anything just pull the paper off the bottom stick it on and put the cover back on! easy to install and holds you it the place you wanna be on the bike!

Athens, GA
Great product

Fit perfectly on my CRF450. You can adjust the bump to any position that is most comfortable to your riding style. It really helps keep yours weight up on the tank more.

Top 250 Contributor
El Paso, TX
Works good

works as expected. it took a little bit to get used to it but it keeps me right where i want to be. i actually have a little more bike control now that im sitting where i need to be in turns.

Top 1000 Contributor
Ashburn, VA

Easy to install and it really helps with your postion when riding!!

works and looks great


Installed quick and easy, looks good and fits nice under the factory seat cover. Adhesive is a nice touch to keep in place.

Williamsport, PA
Very helpful!

if you like being in place and want to get away from the sliding back on the seat from the power of a 450.. this can help keep your butt planted. easy to install and better with a high tach seat cover.

Placentia, California
Good buy!

This thing fit and feels great. It'll hold you inplace when hard on the the gas!

6 Questions
Answered:   6
Not Yet:   0
Q: Seat Dimensions
Over 4 years ago
Just wanted to know what the dimensions of this foam is. I want to use it for a custom application. Thanks, Andy
MotoSport Staff Expert
Over 4 years ago
A: The bump is roughly 5 ½” wide x 12” long and 1 ¼” tall at the highest point.
Q: We are restoring a 1973 Honda xl175 and need seat foam. Will this work to look like the factory foam of that year that is on the seat pan?
Over 4 years ago
Over 4 years ago
A: the Factory Effex Bump Seat Foam is added on top of the existing foam to better keep the rider in the desired position on the bike.

I would recommend taking the seat to a custom upholstery shop and see if they can replace the foam on the seat pan for you.
Q: Stock cover
Over 8 years ago
will this bump work with the stock cover on an 07 crf250r?
Over 8 years ago
A: Yes, that's what we used. It should be set out in the sun or use a hair dryer to help stretch it a tiny bit. I also trimmed about 1/2 inch of foam from the front edge of the seat so it would pull back and lay right. We are very pleased with the results. My rider likes the front edge of the bump about 8" back from the front edge of the seat. This provides a saddle to plant him in place to attack the turns. He sits down in front of the front edge of the bump in turns.
MotoSport Staff
Over 8 years ago
A: Yes, this should work with your stock cover. It's going to be really tight getting it on though.
Q: Will this work with the stock seat cover or do i need to buy another one
Over 8 years ago
Expert MotoSport Staff
Over 8 years ago
A: This will only work with the TC-4 seat cover with bump. A stock cover will not fit.
Q: Will this work
Over 9 years ago
will this work on any seat cover?
Expert MotoSport Staff
Over 9 years ago
A: These are sold bike specifically.
Q: Will this work on a 2-stroke?
Over 9 years ago
I have a 2002 cr 250 w/ a one industries "complete" seat. Will this seat bump work for my application?
Over 9 years ago
A: Yeah it should, if it is too large you can always take a box cutter or an exact-o knife and cut the foam. just be careful to do it slowly or you will risk ripping it
See all bikes that this part fits...
See Fitments
# Part Numbers
Product Variant Manufacturer Part #
Honda/Kawasaki 11-19300
Suzuki/Yamaha 11-19200