RIRA × Dr Curtis Bullock: A One-Off Collaboration for Riders Who Dare to Stand Out

C2 + Bullock: Performance, Passion & Pedigree Perfectly Aligned

When we at Chapter2 first spoke with Dr Curtis Bullock about a collaboration, we knew we had something beyond the usual custom project — this was about creating a true collectable frameset. Dr Bullock’s relentless pursuit of excellence, combined with our design ethos and craftsmanship, has resulted in a one-off size L RIRA frameset that blends cutting-edge engineering, bespoke artistry, and real-world performance.

We are now making this frameset and build options available exclusively in the US Only. Price guideline below is just to whet your appetite, as you can have any build option you desire:

1. Size L RIRA Dr. Curtis Bullock Frameset + C2 MANA5 Handlebar + C2 Tumu Seatpost US$4,759.00
2. No.1 above w/ Shimano Ultegra Di2 + Vision Metron SCSL Wheelset fully built up US$7,499
3. No.1 above w/ SRAM Force AXS E1 + Vision Metron SCSL Wheelset fully built up US$7,499.00
4. No.1 above w/ Shimano Dura Ace Di2 + Shimano C50 TL Wheelset fully built up US$8,999
5. No.1 above w/ SRAM Red AXS E1 + Zipp 404 FC Wheelset fully built up US$8,999.00
6. No.1 above w/ Campagnolo SR SRL 2x + BORA WTO 45 Wheelset fully built up US$10,499.00

** Prices shown are indicative only and include the completed bike build plus shipping. Standard equipment covered in the price includes Vittoria Corsa Pro tyres, a Selle Italia SLR Boost TM Superflow saddle, and Selle Italia Gran Fondo griptape. Any customisation or deviations from this standard build may result in a price adjustment.

Why This Collaboration Matters

Shared DNA of Performance & Purpose — Dr Bullock brings deep experience, a unique riding philosophy, and a passion for pushing boundaries. At Chapter2, we build bikes with soul: engineered to go fast, endure, and still stand out. The RIRA platform proved the perfect canvas for this creative synergy.

A Rare, One-Of-One Build — This isn’t just a custom order. It’s a single frameset, one size L, designed and hand-crafted to reflect both Dr Bullock’s vision and the Chapter2 standard for excellence. Owning this RIRA is owning a piece of history.

From Drawing-Board to Pavement, With Integrity — As with all Chapter2 builds, every tube, angle, and contour has been carefully considered. From ride quality to aesthetics, nothing was left to chance.

What Makes the RIRA Bullock Edition Stand Out

Bespoke Engineering Meets Refined Craft

The RIRA’s carbon frame architecture offers a refined balance of stiffness and compliance — ideal for pure road performance without sacrificing ride comfort.

Fully integrated cable routing, frame shaping, and component interface that complements and reflects both Dr Bullock’s aesthetics and Chapter2’s obsessive attention to detail.

Unique Finish & Aesthetic Touches

The paintwork is original to this build — a signature finish that combines subtlety and boldness, giving the bike a presence that commands attention whether parked or in motion.

Details like badge placement, finish layering, and final clear-coat have been executed by hand, making this RIRA more than just a functional ride, but a piece of bespoke craftsmanship.

The limited, one-of-one nature means this frame will never be replicated — meaning this RIRA will always stay unique.

Performance With Personality

With geometry tuned for size L, this bike is designed for strength, speed, and stability — yet retains the finesse and responsiveness Chapter2 frames are known for.

Whether you’re climbing, sprinting, or navigating twisty roads, the RIRA delivers the kind of ride feel that turns heads and earns respect.

It’s not just about aesthetics — it’s about real-world ride performance, with the added bonus that you’ll never see another like it on the road.

A Collaboration Built on Respect, Vision & Shared Values

At its core, this isn’t just a “custom painted frame.” It’s a statement: what happens when two bike-obsessed people — one a seasoned designer and brand founder, the other a passionate rider and artist — decide to push beyond the standard.

For Chapter2, collaborations like this reaffirm our commitment to individuality, craftsmanship, and creating bikes that aren’t constrained by catalogues or sizing charts. For Dr Curtis Bullock, it’s about owning a ride that reflects his ideals, his style, and his pursuit of excellence.

For the Rider Who Values Rarity & Soul

This one-off RIRA in size L is for those who don’t just ride — they express. It’s for riders who value the story behind the build, the hands that shaped it, and the lineage it represents.

If you believe a bike can be more than a tool — if you believe it can be art, purpose, and identity fused into carbon and steel — then this collaboration is for you.

Ride it. Live it. Own it.

Interested in learning more or seeing the RIRA Bullock Edition in person? Contact us at Chapter2. We’re honoured to share this unique creation with riders who get what it’s about.