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Chain Tensioner

julio 31, 2026

Box One Chain Tensioner 10mm x 2 Axle Hole Gunmetal

Box One™ Chain Tensioners are extruded then CNC-machined from 7075 aluminum for an optimal balance of strength and weight. A minimalist design adds style while reducing their overall mass. Keep in mind, however, they aren’t indestructible (neither are your dropouts).
julio 31, 2026

Box One Chain Tensioner 10mm x 2 Axle Hole BLUE

Box One™ Chain Tensioners are extruded then CNC-machined from 7075 aluminum for an optimal balance of strength and weight. A minimalist design adds style while reducing their overall mass. Keep in mind, however, they aren’t indestructible (neither are your dropouts).
julio 29, 2026

MKS BMX Chain Tensioner – For 9.5 – 10 mm axles, 8mm thick dropouts, Gray

Gap30 Cycles All Riders. No Attitude. Gap30 Cycles is your source for quality bicycle parts and accessories at great prices MKS BMX Chain Tensioner - For 9.5 - 10 mm axles, 8mm thick dropouts, Gray Item Description MKS BMX Chain Tensioner.Axle adjuster for rear facing horizontal dropoutsFits 10mm or 9.5mm axlesInvestment castFor 8mm thick dropoutsItem SpecificationsBrand: MKSMfrPartNo: CA-MX10Color: Graykeyword search: MKS About Us Payment Shipping Terms Returns About us Our motto is 'All Riders, No Attitude!' We're here to provide friendly and personal service for all cyclists. Shop our great selection of parts and accessories and enjoy fast delivery to your door. We guarantee your satisfaction and stand behind everything we sell. Standard shipping is always free to the lower 48 states. Thanks for your business and enjoy the ride! Payments Payment for all eBay orders must be completed through eBay payments. Shipping We ship within the 48 contiguous United States. Tracking is provided for most US domestic shipments. Free Standard Shipping Most orders are processed within 2-3 business days of order receipt Allow 1-5 business days for delivery after your order has shipped Shipping times are estimated and are not guaranteed by Gap30 Cycles Terms Item Availability While we try to maintain accurate quantity in our listing, items listed on eBay may be sold elsewhere before the eBay listing ends. If you bought an out of stock item, we will cancel your order and issue a refund. Please do not leave negative or neutral feedback for cancelled orders. Condition Guide Unless otherwise noted, all products sold by Gap30 Cycles are brand new in retail packaging and include U.S. manufacturer warranty. 100% Customer Satisfaction Guaranteed We want to ensure your satisfaction. If you are dissatisfied with your purchase or shopping experience, we would like to hear from you. Please contact us using eBay Messaging . Please be sure to include your contact information and order number. Please note: Business hours are Monday-Friday. We try our best to respond to all questions and comments within one business day. Lost or Damaged Shipments If your order was damaged during shipping or if you did not receive your order, contact us and we will be happy to take care of the issue. Please wait until the end of the delivery time estimate before contacting us about missing shipments. Please contact us using eBay Messaging . Please include your contact information and order number. Your Privacy Gap30 Cycles does not sell or market customer information to other businesses or organizations. Customer Comments We are constantly striving to improve our service and would love to hear your comments. Please contact us using eBay Messaging Returns Gap30 Cycles accepts returns within 30 days of order receipt. Return Process Please contact us using eBay Messaging before returning your order. Returns without prior authorization will not be refunded. Return Requirements Returned merchandise must be in the same condition in which it was received. No return credit will be given if an item is in used condition, has been installed, or has missing or damaged retail packaging. Please adequately package return shipments. No credit will be given if item is damaged in return shipment.
julio 27, 2026

Bicycle Chain Tensioner 49,50,66, 80cc (Safe Reliable Chain Tensioner)

*Ebay is now charging you tax beginning November 5, 2019. I put no tax but that option has disappeared. Pic 3 and 4 you're buying already assembled and tested just slap on the stock wheel and you ready to go. Also got new awesome chain tensioner with anti motor rotation for $25 ship and muffler bracket. I recommend this new one way better awesome motor can't rotate left when cranking and won't grind down your chain on the side and when slowing down more stress motor can't rotate. I stepped on muffler and motor still can't rotate and all you gotta do is tight up the clamp to adjust motor straight. I will be putting this chain tensioner on all my bike build from now on. Here ebay link: https://www.ebay.com/itm/Motorized-Bicycle-Spring-Chain-Tensioner-With-Anti-Motor-Rotation-49-50-66-80cc/123707746982?hash=item1ccd8e6aa6:g:G10AAOSwx2BcfboJ or type in "Motorized Bicycle Spring Chain Tensioner With Anti Motor Rotation 49,50,66,80cc" with Youtube video in the description for more details. *Will come with screws and spring everything needed textured black. 1/8 thick metal strong put a lock nut first to lock in the thick size 13 long bolt since you don't want the arm to be coming loose then wiggling tilting or flying off at 32mph - a lot of stress on the pivot). You use your stock wheel (will not fit with wider or other wheels because of the lock nut first) and nuts/bolts as well. The stock wheel is awesome since it can guide the chain from falling off. Personally proven and tested for many miles no problem and still no problem when motor kit first came out. Safer since the stock chain tensioner can rotate into the wheel spoke unless you weld it on there so it can't move. Cut the chain short as possible don't leave big slack. Will not fit on all bikes and if it doesn't fit what you can do is take out the pedal (clockwise) and put back (counter clockwise) is the trick then use a car jack bar to bend the pedal arm out. It can fit on any bikes bend bottom first then bend top end so pedal can be straight. You can also bend aluminum with a press. If you planning to put on medium size pink bike as above I can cut the arm half an inch shorter as I did just leave a message here Youtube in action: https://www.youtube.com/watch?v=1r7cwnWvE5g How to complete trouble shoot the motor not starting: https://www.youtube.com/watch?v=uJHPVxWfOzo *Check out blue mountain bike chain tensioner in action. On Youtube type in "80cc Bicycle Motor Kit Chain Tensioner On ebay!" or here link on Youtube: https://www.youtube.com/watch?v=j728gSD4SZ8 Located in Long Beach, CA made in the U.S. so fast shipping. I get these out next day to post office except Sunday. Don't buy the big rubber motor mount the motor will flex/bend won't work grinding the chain on the side and don't waste your money on unnecessary things. I cut inner tube put that as cushion to reduce vibration better. Use a cap screw to tight in all the studs on the motor kit since they don't a good job but don't over tight or strip them. I have all the 212cc Harbor Freight motor sprocket, motor mount, clutch lock, chain guard etc. so if something not on ebay and you need hit me up here more details on the Escalade Powerwheels and I believe its 2006 Kawasaki brake caliber but not sure but also have that mount: https://www.youtube.com/watch?v=EkJRP60BxOM Also have muffler bracket here ebay link:https://www.ebay.com/itm/Muffler-Bracket-for-49-50-66-80cc-Bicycle-Motor-Kit-Hose-Clamps-Included/123666902860?hash=item1ccb1f2f4c:g:KjUAAOSwq4ld9yHQ . Also have reverse bicycle chain tensioner to mount roller on top chain instead. Occasionally check your magneto bolts, if your motor not starting could be the magneto bolts coming off. Click on my ebay seller information "thaison1864" it will bring up all my ebay listings and there more on next page. Have custom Powerwheels face rim pic above use Walmart grey cake pan here ebay link for more details: https://www.ebay.com/itm/113741716289 Check out Hillsong - Beneath The Waters (I Will Rise) its on Youtube. Use Youtube to MP3 Converter you can get any songs on Youtube fast. Copy Youtube link, paste in field box, hit convert video, download, save file, 5 seconds. No need to register and look for link ending in "org". Also check out Celtic Woman - Fields of Gold, You Raised Me Up, Amazing Grace, Follow On! Cell text or call Thaison Nguyen (Tyson Win) 562 / 213 / 8642 located Long Beach, CA. *As with all my ebay listings 200 songs list included! New songs Elevation - Grace Like A Wave and just uploaded Elevation - Grace Like A Wave (Revised)! repeating good part 3 times in the beginning; Call Upon the Lord and Evidence! If you get sleep paralysis the trick is to call out Jesus Name in your head for help and instantly the devil is off you back and you can move and breath again. There is nothing wrong with you just the devil after you. No sale tax on everything :)! *New song: Thomas Bergersen - Homecoming, place in heaven
julio 26, 2026

JP Crupi Bmx Metal Aluminum Chain Tensioners NOS Set of 2

JP Bmx Metal Aluminum Chain Tensioners NOS Set of 2. These are from the'90s mid-school era. The shop I got them from 20 years ago is in Monrovia California. The shop had them since the '90s. LOCAL PICKUP IS AVAILABLE. MESSAGE ME. Ask all the questions you need to before you purchase. NO RETURNS SOLD AS-IS!
julio 25, 2026

Brompton Chain Tension Assembly For 1 Or 3 Speed -Free Mainland Shipping

The Brompton Chain Tension Assembly is specifically designed for 1 or 3 speed Brompton bikes. Made by the reputable brand Brompton, this assembly ensures proper chain tension for optimal performance. With free mainland shipping included, it's a convenient and reliable option for cyclists looking to upgrade or repair their bike's chain tension system. eBay’s AI Please ask questions before you bid. Packaging may vary.