9 Best frame adapters of 2025

Save up to 18% off

Best Choice

1

Thule
Thule Frame Adapter, Compatible with step-thru, BMX, non-standard frame designs, Adjustable 18"-30.5" length fits most frames
Main highlights

Easy Installation and Secure Fit
The adapter features an easy-to-use push button design for quick installation and removal, and a 360 locking collar to keep the bike secure.

Versatile for Various Bike Types
Ideal for non-standard bike frames including women's bikes, BMX bikes, kids' bikes, and full-suspension bikes, ensuring compatibility with multiple bike rack styles.

Highly Durable and Protective
Customers consistently praise the adapter's solid build quality, easy telescoping adjustment, and molded rubber pads that protect the bike finish.
Key specs
- Load Capacity:50 Pounds
- Dimensions:11.81 x 1.57 x 1.57 inches
- Weight Limit:50 pounds
- Compatibility:womens, BMX, kids bikes
- Mounting Type:Strap
9.7

Exceptional

Our Rating

9.3
lasts a long time

9.3
Easy installation

8.7
Simple to use
How do we rank?

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Value for Money

2

Venzo
Venzo Bike Top Tube Cross-bar Frame Adjustable Adapter for Bike Car Rack or Home Storage Stand - Great for Y-Frame Kids Ladies Dual Suspension Cruiser MTB Road Bicycles - Capacity 18kg/39.7Lbs (1)
Main highlights

Durable and Safe Construction
Oversized diameter tubing and anti-rotation inserts for greater stability. Rust-resistant, sturdy steel with non-marking plastic clamps protect bike finish.

Ideal for Step-Through Bikes
Perfect for mounting bikes without a straight crossbar on car racks or home storage units. Provides extra clearance for various bike types.

Ease of Installation
Customers frequently praise the easy installation and secure fit, making it simple to mount and transport bikes, especially step-through models.
9.5

Excellent

Our Rating

9.9
Easy installation

9.7
Simple to use

9.3
worth the money
3

Retrospec
Retrospec Bike Rack Cross-Bar Top Tube Adjustable Adapter, Black, 18"-28" (3545)
Main highlights

Key Features
Facilitates carrying step-through and non-conventional frames on hitch and trunk mounts; easy, tool-free installation; supports up to 45lbs.

Ideal Use Cases
Perfect for transporting step-through, suspension bikes, or those with non-conventional frames, measuring 18-28 inches stem-to-seat post, on hitch and trunk bike carriers.

Customer Praise
Most reviews highlight the adapter`s ease of installation and its effectiveness in securing various bike frames on car racks as the top commendation.
Key specs
- Load Capacity:45 pound
- Dimensions:14 x 16 x 4 inches
- Weight Limit:45lbs
- Compatibility:18-28 stem-to-seat post
- Mounting Type:U-Bolt
9.4

Excellent

Our Rating

9.7
Easy installation

9.5
Simple to use

9.1
Durability
4

Allen
ALLEN Tension Bar Bicycle Cross-Bar Adaptor, Black, One size

18% Off
Main highlights

Key Features
Adds a top tube for bike transport, with internal spring for tension and plastic-coated hooks to protect the bike`s finish.

Ideal Use Cases
Perfect for transporting suspension, step-through, BMX, and women`s style bicycles with 18-27 inches between headset and seatpost.

Customer Reviews Highlight
Most praised for its ability to securely transport various bike styles without damaging the finish.
Key specs
- size:One Size
- color:Black
- material:Alloy Steel
- mounting:Bicycle Mount
- sport:Cycling
9.2

Excellent

Our Rating

9.9
lasts a long time

9.9
Easy installation

9.9
Simple to use
5

CXWXC
Bike Crossbar Adapter for Bike Rack (32kg/70lbs) - Top Tube Cross-Bar Adjustable - Bicycle Bike Adapter Bar for Low-Step Step-Through Bikes, BMXs, Ladies and Kids Bikes (1 PC)
Main highlights

Key Features
Adjustable, locks at maximum length, supports up to 70 lbs, easy-to-use quick release, made of sturdy steel for secure bike transportation.

Ideal Use Cases
Perfect for bikes with non-standard frames like ladies, BMX, and full-suspension mountain bikes, ensuring compatibility with traditional bike racks.

Customer Praise
Most reviews highlight its robust build and reliability, ensuring bikes are held securely and safely during transport.
Key specs
- Load Capacity:70 pounds
- Dimensions:25.5 x 49.8 x 1.8 inches
- Weight Limit:70 pounds
- Compatibility:Variety of bikes
- Mounting Type:Crossbar adapter
9.1

Excellent

Our Rating
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6

Yuleimy

2 PCS Bed Frame Brackets Adapter for Headboard Extra, Full to Queen Conversion Kit, Heavy Duty Bed Modification Plate, Headboard Attachment for Metal Bed Frame, Headboard Adapter Kit with Hardware
8.9

Very Good

Our Rating
7

Swagman
Swagman DELUXE BAR ADAPTER, black
Main highlights

Key Features
Easy install with push-button, quick-release for convenience, vinyl coated hangers protect bike finishes, telescopic adjustment for sturdy fit.

Ideal Use
Perfect for securing kids bikes, sloped top tube bikes on hanging racks, or creating a higher bar for ratchet arms with 35 lbs max load.

Customer Praise
Most reviews highlight its ease of installation and removal, and durability, appreciating the product`s protection of bike finishes.
8.6

Very Good

Our Rating

9.7
Easy installation

9.7
lasts a long time

9.5
Durability
8

CAFORO

CAFORO Queen Bed Modification Plate, Headboard Attachment Bracket, Bed Frame Adapter Brackets, Bed Headboard Frame Conversion Kit Full to Queen Set of 2
8.4

Good

Our Rating
9

Tyger Auto
Tyger Auto TG-RK1B108B Deluxe Bike Top Frame Cross Bar Telescopic Adaptor - Black
Main highlights

Key Features
Adapts non-conventional frames for rack mounting, quick push-button clamps, telescopic adjustment, anti-rotation for stability, secure rubber collars.

Ideal Use Cases
Perfect for kids, women`s bikes, and bikes with sloping down tubes needing solid rack mounting. Supports up to 33lbs.

Customer Praise
Highly praised for easy installation and the robust, secure mounting it provides, enhancing convenience and bike safety.
8.3

Good

Our Rating

9.5
Simple to use

8.9
worth the money

8.9
Durability

9 Best frame adapters of 2025

1

Thule Frame Adapter, Compatible with step-thru, BMX, non-standard frame designs, Adjustable 18"-30.5" length fits most frames

9.3

9.3

8.7

How do we rank?

How do we rank?

Analyzing top stores

2

Venzo Bike Top Tube Cross-bar Frame Adjustable Adapter for Bike Car Rack or Home Storage Stand - Great for Y-Frame Kids Ladies Dual Suspension Cruiser MTB Road Bicycles - Capacity 18kg/39.7Lbs (1)

9.9

9.7

9.3

3

Retrospec Bike Rack Cross-Bar Top Tube Adjustable Adapter, Black, 18"-28" (3545)

9.7

9.5

9.1

4

ALLEN Tension Bar Bicycle Cross-Bar Adaptor, Black, One size

9.9

9.9

9.9

5

Bike Crossbar Adapter for Bike Rack (32kg/70lbs) - Top Tube Cross-Bar Adjustable - Bicycle Bike Adapter Bar for Low-Step Step-Through Bikes, BMXs, Ladies and Kids Bikes (1 PC)

6

2 PCS Bed Frame Brackets Adapter for Headboard Extra, Full to Queen Conversion Kit, Heavy Duty Bed Modification Plate, Headboard Attachment for Metal Bed Frame, Headboard Adapter Kit with Hardware

7

Swagman DELUXE BAR ADAPTER, black

9.7

9.7

9.5

8

CAFORO Queen Bed Modification Plate, Headboard Attachment Bracket, Bed Frame Adapter Brackets, Bed Headboard Frame Conversion Kit Full to Queen Set of 2

9

Tyger Auto TG-RK1B108B Deluxe Bike Top Frame Cross Bar Telescopic Adaptor - Black

9.5

8.9

8.9

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