El Roy Frame Kit

El Roy frame kit profile.

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  • Price: $1,099.00*
  • Wheel Size : 29"
  • Frame: CroMo/Steel
  • Size Range: Regular, Grande

Manufacturer’s suggested retail price may not include additional shipping or preparation charges. Please contact your local Marin dealer for a quote.





Named in honor of our favourite post-ride taqueria, the Marin El Roy is our take on the perfect winch-up, shred-down hardcore hardtail. We’ve combined the soul of steel with super-modern, gravity-focused geometry and paired it up with big-trucking 29” wheels and a build-kit that’ll take on the roughest and toughest of trails.

The Marin El Roy Frame Kit allows riders to upgrade to ‘Roy, using their existing bike’s components. The El Roy is a Series 3 double-butted and formed CrMo frame with super-modern geometry that adds up to bags of fun on the mountain. It’s supplied with a seat clamp, FSA Orbit headset and bolt-on thru-axle to keep the setup simple and save you some dollars for burritos and brews.

El Roy is available in two sizes - ‘Regular’ and ‘Grande’.


  • Frame

    Series 3 Double Butted and Formed CrMo tubing, Integrated Drop-In Headset, External Rear Derailleur and Brake Housing, Internal Dropper Post Routing, 148x12mm Boost Rear Spacing, PM Brake Mounts

  • Headset

    FSA Orbit 40 No.42 ACB

  • Extras

    Bolt-On Thru-Axle

  • Extras

    Seat Clamp 33.3mm OD

Specifications, pricing, and availability are subject to change without notice.


El Roy Frame Kit geometry diagram
Regular Grande
Stack 645 645
Reach 480 510
Headtube Angle 63° 63°
Headtube Length 120 120
Seattube Angle 78° 78°
Seattube Length 420 430
Toptube Effective 617 647
BB Height 318 318
BB Drop 65 65
Chainstay 435 435
Wheelbase 1252 1282
Standover Height 735 743
Fork Offset 44 44

All lengths in millimeters



The El Roy is built on a stout Series 3 4130 CrMo frame with investment cast dropouts, integrated drop-in headset, external brake and hose mounts, all fully ED coated for longevity.

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Detail image of the headtube of the El Roy, highlighting the slack 63° headtube angle


Gravity-oriented geometry, with a 63° headtube and 78° seattube angles, 44mm fork offset, and long reach measurements (Regular = 480mm, Grande = 510mm).

Profile image of the El Roy, atop brick and stone rubble


Regular and Grande frame sizes fit a wide range of riders, with included 150mm (Regular) or 170mm (Grande) dropper posts.

Detail image of the right rear dropout of the El Roy


Custom investment cast CrMo 148x12mm Boost thru-axle drop outs provide strength and stiffness where you need it most.

Marin El Roy top tube storage detail.


Bosses on the underside of the top tube give the rider the option to mount tools and other accessories in a tidy and secure fashion.


The Marin El Roy is just about as dialed as a hardtail can be for descending fast, or descending steep, or both. The flip side is the El Roy doesn’t climb as well as less aggressive hardtails. Aside from the wheels the build kit is spot on for its intended use, and offers a ton of value at this price point. I give the El Roy style points as well for its steel frame construction and glossy blue and red paint job.

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