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Big Gun Rev Box
Big Gun Rev Box

$ 68.39 - $ 179.99
10% Off - Save up to $20.00

Select your bike to see if this rev box fits
Item #GUN000N

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15 Reviews
4 out of 5 stars
5 Star   10 4 Star   1 3 Star   1 2 Star   0 1 Star   3
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All Reviews
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Great features

I bought this a month ago and i'm so glad i did

Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Instant change to the power

Took less than 5 minutes to install and had immediate results.

Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5

hot, nasty speed!

Austintown, OH
Durability 5/5 Ease of Installation 5/5 Power 5/5 Style 5/5
Works great

I've had this for about two years now and I've had no problems with it. It does make a difference in power and top speed.

Verified Purchaser
San Diego, Ca.
Not so happy....

the big gun rev box I got and installed in my quad did not work for some reason it made my quad run like grud, so I called motosport to see what they can do for me and some guy named Isaac said "it's a electronic device so we can't take it back call the manufacture see what they say".... sweet thanks

Portland, MI
Durability 1/5 Ease of Installation 5/5 Performance 1/5 Power 1/5 Style 3/5
Waste of money

i have a 2009 TRX 450er , i plugged this box in and it literally did nothing for me. i felt absolutely no increase in power and my top speed was clocked actually a little bit slower, from 80 to 76. maybe i just got a bad box, but i am not pleased.

Boron ca
Bad product

I put this on my bike and it made it run terrible worst 200 dollars I've ever spent stock box works better

Manhattan, KS
2007 trx450r

Product works great! Big differance in the rpms. pulls hard in 4th and 5th gear can really tell the differance. Awesome!!!!

Top 500 Contributor
butler, PA
Bad luck

pulged it in & it worked great for about a month. then my fan stoped wotking & my indicator lights didnt work. i put the old one back on & everything worked again... MOTOSPORT is a great company to deal with. they got it warrantied by big gun & being the only differance was the higher rev limiter i took the credit towards some other parts.. it cant hurt to try it. mabey you will have better luck than me....

seattle washington
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Good for the price

helped wake up my 660. it should run like this from the factory

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39 Questions
Answered:   38
Not Yet:   1
David Reynozo
Q: Why does it show it has 2 plug Ins and my Suzuki Ltz250 only have one plug in??
10 days 23 hours ago
Top 10
10 days 23 hours ago
A: Please disregard our photo of the Big Gun Rev Box. The photo shown may or may not be the unit specific to your motorcycle or ATV.
If you correctly profile your Suzuki LTZ250, including the model year, we will send you the specific unit to precisely fit your vehicle.
Q: Will this cdi bolt up same as the stock one? 2019 Honda trx250x
1 month 9 days ago
Dan Gearhead
Top 25
1 month 9 days ago
A: Yes, this unit should install the same as your OE piece.
Q: Will this work on a 2008 Yamaha raptor 250 
1 month 18 days ago
Top 10
1 month 18 days ago
A: Yes this will fit the 2008 raptor 250.
Biggun dave
Q: I need a cdi unit for my 2008 suzuki ltz 400 will this work as a replacement
1 month 19 days ago
Top 10
1 month 19 days ago
A: The CDI for your '08 LTZ400 is Suzuki part 32900-07G10, available at this link: https://www.motosport.com/atv/oem-parts/suzuki/2008/ltz400/electrical

The Big Gun Rev Box will help you to improve power and control fuel management, however it is not a replacement for your stock CDI.
Q: Will this fit a 06 Yamaha raptor 50? 
1 month 19 days ago
Top 10
1 month 19 days ago
A: Yes the product is offered for your model.
David 58696
Q: Will this fit my 2007 Suzuki ltz250 that has a hmf slip on ??. 
2 months 4 days ago
Top 10
2 months 4 days ago
A: Yes this would work with your atv.
Q: Will this fit my Apollo 125cc
3 months 18 days ago
Top 10
3 months 18 days ago
A: This will not fit your Apollo 125.
Q: Does it work on a 2008 Honda TRX250EX
4 months 10 days ago
Top 10
4 months 10 days ago
A: Yes, if you profile your machine accordingly, this will provide you the part needed for your 2008 TRX250EX.
Q: How is this compared to the bbr cdi box in terms of power?
Over 6 months ago
Top 10
Over 6 months ago
A: They are extremely similar and very very close in rpm and overall power gains.
Q: Will it fit my 2007 Honda 250ex
Over 6 months ago
Top 25
Over 6 months ago
A: Yes it will just make sure you profile you make model and year before adding to the cart
1 - 10 of 39

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See Fitments
# Part Numbers
Product Variant Manufacturer Part #
Big Gun Rev Box N/A
Big Gun Rev Box 40-R10A
Big Gun Rev Box 40-R10C
Big Gun Rev Box 40-R19A
Big Gun Rev Box 40-R19
Big Gun Rev Box 40-R21
Big Gun Rev Box 40-R05C
Big Gun Rev Box 40-R32
Big Gun Rev Box 40-R10B
Big Gun Rev Box 40-R09A
Big Gun Rev Box 40-R11
Big Gun Rev Box 40-R28
Big Gun Rev Box 40-R20
Big Gun Rev Box 40-R22
Big Gun Rev Box 40-R01
Big Gun Rev Box 40-R24
Big Gun Rev Box 40-R16
Big Gun Rev Box 40-R03
Big Gun Rev Box 40-R06
Big Gun Rev Box 40-R04
Big Gun Rev Box 40-R09
Big Gun Rev Box 40-R02B
Big Gun Rev Box 40-R02
Big Gun Rev Box 40-R02A
Big Gun Rev Box 40-R30A
Big Gun Rev Box 40-R10
Big Gun Rev Box 40-R10G
Big Gun Rev Box 40-R25
Big Gun Rev Box 40-R31