A Unified Front Triangle with GeoAdjust Headset
The first key feature to the Modular Frame Platform is a unified front triangle with its GeoAdjust
Headset. With the GeoAdjust Headset you can quickly and easily adjust the reach and wheelbase of your
10 mm. This allows you to dial in your frame’s fit based on your unique dimensions, as well optimizing
handling for your local terrain. For example, riders may use the shorter setting for the average trail
ride, while using the long setting as a “turbo button” when heading to the bike park.
Just like any normal headset, the GeoAdjust Headset consists of upper and lower cups. While the upper
cup is used across the entire line, there are two lower cup options for the GeoAdjust Headset, a 0 mm
taller 15 mm Cup.
The 0 mm Cup is designed to work best with 29” front-ends and the 15 mm Cup with 27.5” front-ends. We’re
not the boss of you, so feel free to use either cup to fine tune your stack height, head tube angle,
height. The possibilities for bike-nerdery are next-level. This is why both cups are available when you
purchase your Seatstay Tuning Kits, as well as individually in our online store.
Quickly adjust reach and wheelbase by 10 mm by using a headset cup
flipchip system. Drop the fork, flip the chips around, and you're done.
One platform, four models: Seatstay Tuning Kits
The second key feature are the Seatstay Tuning Kits, allowing the unified front triangle to be paired
with unique, model-specific seatstay kits to “tune” your bike for varying ride styles and terrain.
Swapping seatstays and requisite components is designed to take a competent home mechanic less than an
hour, so you can quickly prepare for a day in the bike park or weekend bikepacking trip.
Perhaps your hometown trails don’t require a long-travel bike but you’ll take regular trips to big
mountain terrain or bike parks a few times a year? So you have a Trail Pistol as your daily ride and
have The Smash kit on hand for a confidence boost in the steeps. Or you love whippin’ 27.5 wheels in
the park but prefer 29er wheels for all-around trail riding so you ride The Smash and swap over to a
Megatrail kit when you make your pilgrimage to the park. With minor tweaks to the frame and components,
this platform can take you anywhere.
Seatstay tuning kits:
Easily move from one bike model to another to optimize for
speed or fun (but if you ask us, fast is
fun). Seatstay Tuning Kits allow you to change
frame geometry, wheel size, and travel, giving you total flexibility to experiment.
Installation & Tech Info
Installing the Seatstay Tuning Kits requires only 5 and 6 mm hex wrenches, but be sure to bring your
three-way out just in case you’re removing the stem and fork. It’s as simple as removing the shock,
rear axle, and the two pairs of bolts connecting the seatstays to the swingarm and rocker link. Reverse
these steps and you’re ready to rock!
Iffy on your home mechanic skills, or just prefer to have your local shop handle your maintenance? The
Seatstay Tuning Kits are available through our Shop Direct sales channel, allowing your favorite local
shop to order up everything you need.
The Seatstay Tuning Kit includes all hardware necessary to install on your GG Modular Frame.
- Derailleur hanger and bolt
Generally, what's not included are the parts you need to remove anyways in order to swap components
(e.g. axle and frame hardware) or that aren't removed in the first place (e.g. rocker). Also, any necessary
components will need to be purchased with the kit (e.g. shock, fork).
If switching between wheel sizes, we recommend getting an additional lower cup for your GeoAdjust
Headset. The 0 mm Cup is designed to be used with 29 front-ends; the 15 mm Cup is designed to be used with 27.5
and 27.5 Plus front-ends.
Frames with the Modular Frame Platform: