SKU: 26212151186

58g 18mm Steerer Extender Compression Plug for 1 1/8" Carbon Road Bike Forks

Sale price$85.50 Regular price$95.00
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Ships within 48 hours · Estimated delivery Oct 29 - Nov 3

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Description

58g 18mm Steerer Extender Compression Plug for 1 1/8" Carbon Road Bike ForksThis product is a light weight solution to safely add 18mm to a 1 1 8" carbon steerer. This extender system must be used with a typical 40mm stack height stem so that the lower 20mm of the stem is clamping on the carbon steerer, leaving the 18mm extension plus a 2mm air gap in the upper half of the stem. The steerer must also be cut squarely for the extender to sit flush. A picture of the extender installed in a carbon steer is shown in pic #8. This

This product is a light weight solution to safely add 18mm to a 1 1/8" carbon steerer. This extender system must be used with a typical 40mm stack height stem so that the lower 20mm of the stem is clamping on the carbon steerer, leaving the 18mm extension plus a 2mm air gap in the upper half of the stem. The steerer must also be cut squarely for the extender to sit flush. A picture of the extender installed in a carbon steer is shown in pic #8.

This is a great solution for any bike with a carbon 1 1/8" steerer which needs a just little bit more steerer stack height. Other extender solutions on the market are typically very heavy and have very long extensions which do not allow the stem to clamp onto the original steerer. 

Weight: 58 grams without the stem cap and bolt, stem cap and bolt is 21 grams.

Condition: New.

At CyclingUpgrades, we fulfill all orders next business day or sooner. Generally we are able to fulfill orders placed by 12pm MT on the same day, however it is not guaranteed. We ship all items via USPS except for frames/wheels which ship via UPS or Fedex. Please check our other listings for additional cycling upgrades and thank you for shopping our store!

Shipping Notes
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Exchange/Return Notes
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SKU: 26212151186

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4.8 ★★★★★
Based on 7 reviews
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Verified Purchase
CS
Port Orchard, US
★★★★★ 5
Good purchase
Size: 11.25“, Color: black-6 pack, Size: 11.25“, Color: black-6 pack
Great, rustic look. Very sturdy. Easy to install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
P
Verified Purchase
pamela
Cuba, US
★★★★★ 5
Perfect
Size: 9.25”, Color: black-4 pack, Size: 9.25”, Color: black-4 pack
very nice brackets..very sturdy. Fits a 1x10 board perfect. Comes with everything you need and a.cool little level also. I loved them.so much I bought another pack and decided to add more shelves for my plants. It was easier to mount the shelf to the bracket then mount the whole shelf. Holds almost all my plants some are pretty heavy.
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Reviewed in the United States on April 5, 2026
J
Verified Purchase
JP
Pawtucket, US
★★★★★ 5
Well made brackets
Size: 11.25“, Color: black-6 pack, Size: 11.25“, Color: black-6 pack
These are nicely manufactured in that they are all exactly the same (with no variations) and with nice countersunk holes for the provided black flat head wood screws. I used a stained 1x12 #2 whitewood (Eastern Pine) from Lowes for the shelves. With these brackets solidly installed into wall studs at 32" on center (every other stud) the 1x12 shelf will easily support a heavy book load. I like the look better than the brackets that have the vertical leg below the shelf. It looks a lot cleaner. It is probably inevitable that your stud layout will result in a bracket or two needing to be installed between solid wood studs. In this case, do NOT use the sheetrock wall anchors provided with the brackets as they will pull out of the wall under an appreciable load. Instead, get some "Snaptoggle" toggle bolts and replace the provided bolts with #10-24 x 1.25" flat head machine screws in black. These toggle bolts are incredibly strong and easy to install. I am adding a postscript to my review regarding bracket spacing recommendations. With a heavy book load, the 1x12 shelf boards don't sag with the brackets spaced 32" apart, however I have found that the brackets themselves are overstressed by about 30% (they are only rated at 80# each.) Heavy books weigh up to about 36# per lineal foot so the maximum spacing of the brackets should be 24" apart. At 32" apart, they won't pull out of the wall if they are fastened into studs but they will sag a little bit back to front under this load. So I added additional brackets in between the installed brackets and now they are 16" apart at the heavy book shelf. The load on each bracket is now less than 50# but they STILL sag about 3/16" from back to front when loaded with books! No danger of structural failure and the sag is not really noticeable.
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Reviewed in the United States on March 1, 2025
J
Verified Purchase
Jamie
Massapequa, US
★★★★★ 5
Love this
Size: 9.25”, Color: black-6 pack, Size: 9.25”, Color: black-6 pack
Perfect, sturdy/ stable, great for the price. So easy to hang. So far very stable and holding a decent amount of weight. Perfect for my sons room and all his legos to keep out of baby brothers reach.
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Reviewed in the United States on April 17, 2026
B
Verified Purchase
BuRRRp
West Palm Beach, US
★★★★★ 4
nice brackets
Size: 11.25“, Color: black-8 pack
loved the look of these brackets with wooden shelves, brackets seem to of good quality and holding up well. only issue is one bracket was slightly out of spec. but besides that they work awesome and good price.
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Reviewed in the United States on November 24, 2025

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