MCS 3/8" Chain Tensioner CNC machined 6061-T6 aluminum Single bolt operation Two axle positioning Laser etched MCS logo  Available in multiple colors
MCS 3/8" CHAIN TENSIONERS in Gold sold by Flite BMX
MCS 3/8" CHAIN TENSIONERS has MCS logo sold by Flite BMX Compatible with 3/8 inch and 10mm axles
MCS 3/8" CHAIN TENSIONERS Compatible with 3/8 inch and 10mm axles available in Blue sold by Flite BMX
MCS 3/8" CHAIN TENSIONERS sold by Flite BMX in Red with MCS logo and Compatible with 3/8 inch and 10mm axles

MCS 3/8" Chain Tensioners

Regular price$12.95
Shipping calculated at checkout.
Size chart

Flite Pad Sizes


***Always measure your bike before ordering***

How to Measure  
Handle Bar Pad Sizes    
All Flite Bar Pads fit standard 3/4" diameter cross bars.
Standard 9" Wide The classic BMX Bar pad width
Extra Wide Sets (Cruiser handlebars) 10 3/4" Wide Extra width for wide bars such as SE Big Honkin' Bars
Frame (Top Tube) Pad Sizes  
Standard Flite pads are 12" long unless otherwise noted in the listing  
Top Tube Diameter Top Tube Circumference   
1" 3.1" - 3.75" Classic chromoly fit found on most early 80's bikes
1.25"  3.76" - 4.0" Larger tube chromoly
1.5"  4.1" - 5.2" Aluminum alloy bike frames
*White foam is only available in 1" and 1.25" diameters
Stem Pad Lengths Standard Flite Sizes  
12 3/4"  Including tails Fits most old school, compact and mid-size stems
14"  Including tails Long for some modern stems 
Reproduction or branded pads may be different sizes to match original specs or specific bike parts. 
  • Ships Worldwide
  • Low stock - 3 items left
  • Inventory on the way
MCS has been in the game since day one and continues their BMX legacy with parts that pack a punch. MCS Chain Tensioners add classy detail to any bike build with the added bonus of keeping your chain tension on-point. Keep it tight!


  • Compatible with 3/8 inch and 10mm axles
  • CNC machined 6061-T6 aluminum chain tensioners
  • Single bolt operation makes tensioning a simple task
  • Available in anodized colors Black, Blue, Gold & Red
  • Laser-etch MCS Bicycles logo
  • 2 axle positioning options to allow use of full dropout range

Material: 6061-T6 Aluminum
Size: 3/8" (10mm)
Color: Black, Blue, Gold or Red
Weight: 2.5 ounces

Orders over $35 ship free within the USA. Premium shipping and international shipping billed at carrier rates.

Most orders ship the next business day.

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Frame Pad sizing

Get a Great Fit:

How to measure your BMX bike for frame pads:

  • Wrap a measuring device around the top tube to get Circumference (include the brake cable in the measurement)
  • Divide the Circumference by 3.14 to get Diameter (Math is Optional)
  • Use the chart to determine best top tube fit

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Our Customers Say...

I love my GT pad set. I restored a 1986 GT Pro BMX. The pad set makes it look great. I feel like a kid all over again. Thank you.

Derek Z.
Woodridge IL

Thank you so much for the quality USA made products and ultra fast service.
Also appreciate accommodating my special needs with the extra foam, the frame pad fits perfect.
Overall a great experience and my bike looks fantastic.
Whoever said you can’t go back to the good ‘ol days hasn’t bought from Flite!

Dante D'
San Jose CA 

Yes all was great, fast delivery, and all great material, gonna order again soon 

James W.
St. Petersburg FL

You guys are Sooooo,,, RAD !!! 52 yrs old still Crazy for bikes. Been buying your stuff since 10 yrs old in the 80's . Those were the Freestyle RAD DAYS . THANK YOU GUYS FOR BEING A PART OF ME  HAVING AWESOME MEMORIES AS A KID . ‍

David W.
Fontana CA 

Everything went as expected. I was pleasantly surprised to see that I received my order much quicker than I had anticipated. Thank You Flite BMX.

David P.
Toronto, Canada

Thanks for making such gnarly pads, you guys rock!

Kellen B.
Chester, NJ

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