Can you adjust the length and if so what are the minimum/maximum lengths?

The minimum length that this can be adjusted to is 18" and the maximum length is 27".

What is the maximum bike weight it can support please

It says on the box. I was going to ignore but when I put it on my new heavy e-bike, I did not think it would hold and I have returned it. Shame as it is a very clever piece of kit.

What is the weight capacity for adapter?

I use this with an ebike that is around 25 kg. But it is only used to steady the bike in the carrier and therefore does not really support too much weight.

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Allen Sports 900B Frame Holder, Black

Product ID: 50823667

Details

Brand
Allen
Colour
Black
Is foldable
No
Item dimensions L x W x H
55 x 18 x 17
Item weight
500 Grams
Load capacity
35 LB

🚲Universal fit for 46-68 cm frames

⚖️Lightweight alloy steel, only 500g

🛡️Plastic-coated hooks protect bike finish

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¥20473

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚴‍♂️ Carry your ride with confidence—no frame left behind!

LIGHTWEIGHT YET STRONG - Alloy steel construction supports up to 35 lbs without adding bulk
EFFORTLESS INSTALLATION - Mounts easily on most bike racks for hassle-free transport every time
UNIVERSAL COMPATIBILITY - Fits a wide range of bike frames including women’s and BMX models (46-68 cm)
DURABLE PROTECTIVE DESIGN - Plastic-coated hooks ensure your bike’s finish stays flawless during transit
SECURE CARBON FRAME TRANSPORT - Inner spring tension keeps your bike locked in place without damage

The Allen Sports 900B Frame Holder is a lightweight, durable alloy steel bike frame adaptor designed to securely hold bicycles with 46 to 68 cm frame lengths, including women’s and BMX bikes. Featuring plastic-coated hooks and an inner spring for stable tension, it protects your bike’s finish while supporting up to 35 lbs. Perfect for carbon frames and e-bikes, it offers universal compatibility and easy mounting on most bike racks.

Specifications

ASIN	B000ELSSZE
Automotive Fit Type	Universal Fit
Best Sellers Rank	13,893 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 1,278 in Bike Accessories
Brand Name	Allen
Colour	Black
Compatible with Vehicle Type	Bicycle
Country Of Origin	China
Customer Reviews	4.6 4.6 out of 5 stars (16,238)
Included Components	Bicycle Adaptor Bar
Is Foldable	No
Item Dimensions	55 x 18 x 17 centimetres
Item Type Name	Bike Frame Adaptor
Item Weight	500 Grams
Load Capacity	35 LB
Manufacturer	Allen Sports
Manufacturer Part Number	900B
Manufacturer Warranty Description	Limited Lifetime
Material Type	Alloy Steel
Model Number	900B
Mounting Type	Mounted on a frame
UPC	765271900007
Unit Count	1.0 count

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