2. CHOOSING THE RIGHT FRONT MOUNT SPACER FOR YOUR BIKE

Standard Front Mounts | Giant Front Mounts | Quill Adapters | Knock Block Extra

Check out the information below to help you determine what you need:

(Looking for a TREK lockring spacer closer to home? The part number is: #545523)

WHAT IS A STEERER TUBE?

Great question! It's the silver part of your bike, below, that goes down and connects to your forks.

You are looking to measure the diameter of the steerer tube at the portion that sticks out from your frame (where it says 1 1/8", below). This is the part where the Mac Ride front mount fits, so it is the part that counts!

Sometimes the spec on your bike will say 1 1/8" with a "tapered" steerer tube, and then give additional dimensions, which can be confusing. As long as it's 1 1/8" at the part above your frame, the rest doesn't matter for fitting Mac Ride. So don't be worried about "tapered".

For bikes with quill stems, they go inside a threaded steerer tube. These bikes, some commuters and older bikes - will need a quill stem adapter, either 7/8" or 1". For North America, there is a sneaky way to check what size you need, with either a Canadian or US quarter:

Picture of a Quill Adapter mounted on a Quill Stem:

ORDERING FRONT MOUNTS FROM MAC-RIDE.COM

The below mounts and adapters are available on our shop. If you have a standard steerer tube, and two 1 1/8" spacers are not enough, you can always order more!

Standard Front Mounts | Giant Front Mounts | Quill Adapters | Knock Block Extra

DIFFERENT SHAPED SPACERS

Cone Shaped Spacers

Some bikes, like Rad Power models, have a cone shaped spacer under the stem. For Mac Ride to be compatible, you need to swap this spacer for a shorter cone shaped spacer to make room for the Mac Ride front mount. So far our customers have been able to find these shorter spacers at their local bike shop. Unfortunately, we do not sell them at Mac Ride. Read more about this solution here. 

Cube Bikes - Hexagon Shaped Spacers

Some Cube bikes use hexagonal spacers. Because the inside of the spacers are still round and 1 1/8", these still work well with Mac Ride. The only trouble is the aesthetics...Mac Ride spacers are round, so they might not look pretty and tidy when stacked in a deck together. Functionally, everything is great. Read more about this solution and Cube bikes here.

WHAT STEERER TUBES ARE NOT COMPATIBLE WITH MAC RIDE?

3. E-BIKE COMPATIBILITY

FITTING YOUR SIZE OF FRAME

Mac Ride is great on small, large, and extra large frames. We have yet to find an XL frame with a top tube that is too long for Mac Ride's telescopic bar. So far, Mac Ride has been able to lengthen to reach the steerer tube and seat post of all XL frames.

Sometimes it is more difficult to get a comfortable fit with an xs frame. Mac Ride fits this frame well, but the smaller space can make it harder for a shorter adult to feel comfortable with a little one up front.

SEAT POST DIAMETER FIXES

For thinner seat posts - You can DIY a rubber patch to thicken the post and make Mac Ride compatible with your bike's seat post.

For thicker seat posts (up to 34.9 mm) - Remove the domed nut from the end of the Mac Ride rear clamp hand screw. This will allow the clamp to open up to 34.9mm. The domed nut is only there to protect the rider's inner thigh from the potential sharp edge of the screw when clamped to very small diameter (27.2mm) seat posts. It serves no other purpose. As long as you don't need to go larger than 34.9mm, by removing the domed nut, there are no changes to the function of the clamp. A heads up-- the nut may be stiff to unscrew as there is a small amount of threadlock on the inside.

This fix is not suitable for seat posts that are larger than 34.9mm (although we do not know of any... at this time!)

5. BIKE MAKES AND MODELS - WILL THEY FIT?

MAC RIDE COMPATIBLE:

It is always a good idea to check your steerer tube, top tube, down tube and seat post but here are the bikes we have yet to see any compatibility issues with. Click on the link to see which models are already in use in the Mac Ride community.

Brodie Canyon Chumba Commencal Cube Diamond Back Diviate Devinci Evil Giant (special spacer available for bikes from 2011-2014)

Giant E-bikes** Haibike Haibike E-bikes** Intense Kona Merida* Moustache Norco Opus Pivot Rocky Mountain

Salsa Santa Cruz Scott Specialized Specialized E-bikes (Levo)** Stooge Surly Transition Trek (lockring spacer available for bikes with Knock Block) Yeti YT Jeffsey

**Most E-bikes require an e-bike adapter

SPECIAL SITUATIONS:

Cannondale usually a great fit but not for 1.5" steerer tubes for Lefty's you'll need this special part to be compatible	Rad Rover can be Mac Ride compatible but not if there is only one giant cone shaped spacer
Rad Power Some Rad Power bikes have a cone shaped spacer If your bike has a cone shaped spacer, you'll need to swap it out for a shorter one to make it compatible with Mac Ride's front mount	Scott Many Scott bikes are great with Mac Ride But some models, like the Scott Spark and Genius, have spacers that are not round. You'll need a Syncros Adapter to make it Mac Ride compatible

6. UNIQUE SITUATIONS

Sometimes our bikes are a little unique. In this case, check out the below:

The part for converting a Cannondale Lefty from 1.5" to 1 1/8" here.

IMPORTANT

If you are unsure whether Mac Ride is compatible with your bike, using the online specification sheet for your bike, you can try measuring with a ruler, or talk to your bike dealer or local bike shop. Feel free to email us with questions as well - info@mac-ride.com.