Chain Tensioners | Billet BMX
BILLET BMX Chain Tensioners for RACE INC Frame 20mm to 10mm Axle Kit
BILLET BMX Chain Tensioners for RACE INC Frame 20mm to 10mm Axle Kit
BILLET BMX Chain Tensioners for RACE INC Frame 20mm to 10mm Axle Kit
BILLET BMX Chain Tensioners for RACE INC Frame 20mm to 10mm Axle Kit

BILLET BMX Chain Tensioners for RACE INC Frame 20mm to 10mm Axle Kit

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  • Inventory on the way
Regular price $99.99 Sale price$79.99 Save $20.00
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Is your Race Inc bike axle moving or sliding making your chain loose? Well Billet BMX has you covered with our Chain Tensioner kit. This kit was designed to solve this issue and was specifically made for the Race Inc 20mm dropout frame. 

Billet BMX chain tensioners feature an internal bolt that does not stick out like other brands on the market. The Shield slides front to back with adjustment making it easy to match axle position on both slides using numbered markings. These are made from 6061 T6 aluminum that are fully CNC machined. The 20mm Washer/Adaptors are made from Stainless Steel for Maximum Strength. The CNC parts are tumbler polished then bright dip anodized for glossy appearance and corrosion resistance. They are finished with Laser engraving for high end detail. 


  • 20mm RACE INC Frame with 10mm Axle
  • 6061 T6 Aluminum Full CNC Tensioners
  • 20mm Stainless Steel Washer/Adaptors for 10mm Axle
  • 47mm of Adjustment
  • Stainless Steel Hardware
  • Anodized
  • Laser Engraved
  • Sold as a Kit (2 Chain Tensioners and 2 Washer/Adaptors)
  • Patent Pending


Note: Not recommended for use with Pegs. Shield may hit peg when adjusting chain tension depending where axle sits in dropouts. Moving axle towards front of bike in dropouts by shortening chain will move shield slider farther from axle allowing more clearance for pegs. Shields are also removable to get more clearance if needed. Many of our customers do have our Tensioners installed with Pegs but modification to the chain may be required for proper fitment. Billet BMX is not responsible for clearance issues with pegs.  


Customer Reviews

Based on 18 reviews
CHRIS LEVY (San Diego, US)
20mm to 10mm tensioners

Pretty darn schnazzy! The RA29 leaves a bit to be desired with the rear axle slots, way too big, wheel kept cocking to the left on acceleration, even with the SE tensioners. I like the billet spacer and the internal screws so nothing sticks out to getcha in a crash. Cheers guys!

JOHN SULLIVAN (Citrus Heights, US)
great products....the rea deal

These tensioner are the ticket for the Race Inc 20mm dropouts. The only way to go. Really nice stuff.

El Jefe (Manteno, US)
Billet bmx chain tensioners Race inc RA 26

Parts work perfectly solved chain loosening problem.

Paul Puente (Hesperia, US)
Better than expected

The quality on these tensioners are awesome. My wheel doesn’t move due to the adapters and tensioners, plus they look amazing on my Raceinc.

James Barbee (Bartlett, US)

Nice stuff recommend it all day

Bill Nicholson (Owasso, US)
Great problem solver!

Worked great to run 10mm axle hubs on the new Race Inc frames. Clean looking too - I like the internal bolt design.

Mark Baricko

Very well made , great design, would be much easier to install if Race Inc had straight dropouts on the frame, need to spread the frame to get them on.

DSW (Seattle, US)
Billet BMX chain tensioners

Super awesome product super well made very high quality. Perfect fitment, best and needed mod for my RA26. Comes with a bunch of stuff, allen wrenches sticker and cool bottle cap opener thanks for that btw!!! Looks geeat installed love the choice of different colors.

Joe Hager (Monroe, US)
Race inc. chain tensioner

Very nice product, I did the pre order the first moment I could and well worth the wait. They are a little larger than I expected but need to be to cover the 20mm dropout slot. I used the center hole and had to modify the inner stainless adapter to clear the adjustment screw. The product is excellent the way they come I’m very happy with my purchase and will be buying more in the future. Thanks

"MOSCH PIT" (Phoenix, US)
Gold Race Inc 20MM to 10MM Chain Tensioners Top Notch Gotta Have

These are top notch and look awesome! Gotta Have



National BMX Champion Pat Coo runs Billet BMX® components including Internal Bolt Chain Tensioners and Titanium Axle Bolts on his Race Bikes. "Billet makes High Quality Parts that I can Trust with Confidence so I can Focus on Winning Races"


I spend a ton of Time Designing all of our High End Parts with Elegant Styling and Precision Fitment. Plus, they have to be Strong Enough to Survive Abuse from Pro Athletes and the Largest Riders. I Strive to make Billet BMX® parts the Best in the Industry.


Dew Tour, Vans Triple Crown and X Games Athlete Zach Lewis runs Billet BMX® Components including Axle Nuts and Internal Bolt Chain Tensioners. "I need High Strength Parts that can Handle my Backflips and Tricks without failure. I can always count on Billet."

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