---
product_id: 1897463
title: "Yakima Mast-Style TubeTop Bike Frame Adapter, Seat, Stem Adapter for Hitch Racks"
brand: "yakima"
price: "$99.80"
currency: USD
in_stock: true
reviews_count: 13
category: "Yakima"
url: https://www.desertcart.us/products/1897463-yakima-mast-style-tubetop-bike-frame-adapter-seat-stem-adapter
store_origin: US
region: United States of America
---

# Secure hold up to 45 lbs Fits sloped top tubes Quick install in minutes Yakima Mast-Style TubeTop Bike Frame Adapter, Seat, Stem Adapter for Hitch Racks

**Brand:** yakima
**Price:** $99.80
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Elevate your ride game—secure, sleek, and ready to roll!

## Quick Answers

- **What is this?** Yakima Mast-Style TubeTop Bike Frame Adapter, Seat, Stem Adapter for Hitch Racks by yakima
- **How much does it cost?** $99.80 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/1897463-yakima-mast-style-tubetop-bike-frame-adapter-seat-stem-adapter)

## Best For

- yakima enthusiasts

## Why This Product

- Trusted yakima brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rock-Solid Stability:** Oversized tubing and anti-rotation inserts keep your bike locked tight during every journey.
- • **Bike-Friendly Molded Collars:** Protect your frame with gentle, damage-free contact points designed for peace of mind.
- • **Universal Mast-Style Compatibility:** Mount any bike with sloped top tubes effortlessly on your hitch rack.
- • **Rapid Seat Post & Stem Installation:** Spend less time setting up and more time riding with tool-free, secure attachment.
- • **Trusted Yakima Durability Since 1979:** Join thousands of riders who rely on proven quality and smart design for their adventures.

## Overview

The Yakima Mast-Style TubeTop Bike Frame Adapter is a durable aluminum accessory designed to mount bikes with sloped top tubes onto mast-style hitch racks. Measuring 22" x 1" x 1", it supports bikes up to 45 pounds with oversized tubing and anti-rotation inserts for enhanced stability. Quick to install on seat posts and stems, it features molded collars to protect your bike frame, making it a trusted choice for versatile, damage-free bike transport.

## Description

Product description

Review: Well made. Easy to use. - Worked very well to attach my wife’s low-step trek to our Thule receiver rack.
Review: Super Easy to Use, Rugged Feel - I have a platform rack for my vehicle, so the sole purpose of this extender was to mount my carbon fiber bikes to my work stand. This bar works perfectly. It is way more sturdy and nice looking than I actually needed, but I am glad I spent the extra money. I leave the bar locked into the stand and simply slide the bike up into it. This is as quick and easy as locking into the stand itself. This approach does allow the bike to swing, but that hasn't been a problem and isn't the fault of the extender. Happy customer, would recommend to others that can't safely lock onto their carbon frames and don't have enough space on the seat tube.

## Features

- Versatile Compatibility: Adapter accommodates bikes with sloped top tubes so you can mount your bike on a mast-style hitch rack; Can be used as an adapter to mount your bike on a single or dual arm mount.
- Quick Installation: Installs quickly and securely to your bike's seat post and stem, ensuring minimal setup time and maximum convenience. Suitable for a wide range of bikes including mountain bikes and cruisers.
- Enhanced Stability: Features oversized diameter tubing and anti-rotation inserts for superior stability, keeping your bike securely mounted during transport. Adapter bar supports 1 bike up to 45 pounds.
- Molded Collar Design: Large molded collars ensure gentle contact with your bike's stem and seat post, preventing damage during transportation; Dimensions: 22”L x 1”W x 1”H
- Take It Easy: Since 1979, Yakima has worked to simplify the way people travel and transport recreational sporting equipment. We put safety, sensibility, and street smarts into every product design.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00066YTGO |
| Best Sellers Rank | #18,222 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #20 in Bicycle Car Racks |
| Brand | Yakima |
| Brand Name | Yakima |
| Color | Black / Red |
| Customer Reviews | 4.6 out of 5 stars 1,249 Reviews |
| Global Trade Identification Number | 00736745025311 |
| Item Dimensions L x W x H | 22"L x 1"W x 1"H |
| Item Weight | 1.5 Grams |
| Load Capacity | 45 Pounds |
| Manufacturer | Yakima |
| Manufacturer Part Number | 8002531 |
| Material | Aluminum |
| Material Type | Aluminum |
| Model Number | 8002531 |
| Mount Type | Seat Post |
| Mounting Type | Seat Post |
| Product Dimensions | 22"L x 1"W x 1"H |
| UPC | 736745025311 |
| Unit Count | 1.0 Count |

## Images

![Yakima Mast-Style TubeTop Bike Frame Adapter, Seat, Stem Adapter for Hitch Racks - Image 1](https://m.media-amazon.com/images/I/51gxt2HwyML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Well made. Easy to use.
*by W***T on October 24, 2025*

Worked very well to attach my wife’s low-step trek to our Thule receiver rack.

### ⭐⭐⭐⭐⭐ Super Easy to Use, Rugged Feel
*by L***E on April 30, 2019*

I have a platform rack for my vehicle, so the sole purpose of this extender was to mount my carbon fiber bikes to my work stand. This bar works perfectly. It is way more sturdy and nice looking than I actually needed, but I am glad I spent the extra money. I leave the bar locked into the stand and simply slide the bike up into it. This is as quick and easy as locking into the stand itself. This approach does allow the bike to swing, but that hasn't been a problem and isn't the fault of the extender. Happy customer, would recommend to others that can't safely lock onto their carbon frames and don't have enough space on the seat tube.

### ⭐⭐⭐⭐⭐ Once you get the hang of it, it works well.
*by J***N on July 5, 2025*

I have four bikes, three of which are step-thru. This item allows me to haul my step-thru bikes on my truck bike rack. Give yourself some time to get used to the loading routine and you'll be fine. The build quality is solid.

## Frequently Bought Together

- YAKIMA - TubeTop Hitch Mounted Bike Rack
- Saris Bones Car Trunk Bicycle Rack Carrier, Mounts 2-3 Bikes, Black - Durable, Rust-Free, Anti-Sway Straps, Fits Most Vehicles, Made in USA, Arc-Based Design, 100% Recyclable Materials

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**Shop now:** [https://www.desertcart.us/products/1897463-yakima-mast-style-tubetop-bike-frame-adapter-seat-stem-adapter](https://www.desertcart.us/products/1897463-yakima-mast-style-tubetop-bike-frame-adapter-seat-stem-adapter)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-10*