Stan's NoTubes Flow MK4 is a tubeless-optimized mountain clincher rim prized for its wide internal profile, reliable bead hook and excellent puncture resistance—features that make set-up and tire seating consistently easy for disc-brake applications. Compared to Race Face and WTB’s more budget-focused offerings, the Flow MK4 delivers a superior tubeless experience and predictable impact performance at a mid-range price, appealing to riders who want a balance of rim compliance, rim-tire interface security, and day-to-day reliability.
Tubeless wizardry
Bombproof bash
Tubeless wizardry
Bombproof bash
Review Summary
"Industry-favorite alloy rim praised for exceptional strength, consistent tubeless reliability, and a good range of widths for different riding styles. Reviewers routinely highlight its long-term durability and straightforward setup."
Bead-hold hug
Proven tubeless-ready aluminum rim that seats tires securely at low pressures.
Bead-hold hug
Proven tubeless-ready aluminum rim that seats tires securely at low pressures.
Recreational Enjoyment
Time-Saving Convenience
Skill Development & Mastery
Stan's NoTubes Flow MK4 is a tubeless-optimized mountain clincher rim prized for its wide internal profile, reliable bead hook and excellent puncture resistance—features that make set-up and tire seating consistently easy for disc-brake applications. Compared to Race Face and WTB’s more budget-focused offerings, the Flow MK4 delivers a superior tubeless experience and predictable impact performance at a mid-range price, appealing to riders who want a balance of rim compliance, rim-tire interface security, and day-to-day reliability.
Tubeless wizardry
Bombproof bash
Bead-hold hug
Proven tubeless-ready aluminum rim that seats tires securely at low pressures.
Offset bed and spoke-hole reinforcement improve wheel durability and tire profile.
Tubeless wizardry
Bombproof bash
Bead-hold hug
Proven tubeless-ready aluminum rim that seats tires securely at low pressures.
Offset bed and spoke-hole reinforcement improve wheel durability and tire profile.
$160-240 USD
Stan's NoTubes Grail MK3 leverages Stan's industry-leading tubeless bead and sealant expertise to deliver a lightweight, reliably sealed rim that excels on mixed-terrain disc-brake bikes; its rim shape and internal profile are optimized for fast, secure tubeless setups. Compared to the higher-priced ENVE G23 carbon option it delivers many of the same tubeless benefits for less money, and versus alloy competitors like Hunt and DT Swiss it often wins on weight and tire conformity while remaining competitively priced for performance-oriented riders.
Instant seal tech
Lightweight comfort
Instant seal tech
Lightweight comfort
Review Summary
"Highly regarded tubeless gravel wheels with a wide internal rim profile, dependable Stan's tubeless seal and consistently low maintenance; long-term users praise ride quality and resilience under heavy use."
NoTubes magic trick
Low-volume internal profile that supports gravel tyre stability
NoTubes magic trick
Low-volume internal profile that supports gravel tyre stability
Recreational Enjoyment
Time-Saving Convenience
Skill Development & Mastery
Stan's NoTubes Grail MK3 leverages Stan's industry-leading tubeless bead and sealant expertise to deliver a lightweight, reliably sealed rim that excels on mixed-terrain disc-brake bikes; its rim shape and internal profile are optimized for fast, secure tubeless setups. Compared to the higher-priced ENVE G23 carbon option it delivers many of the same tubeless benefits for less money, and versus alloy competitors like Hunt and DT Swiss it often wins on weight and tire conformity while remaining competitively priced for performance-oriented riders.
Instant seal tech
Lightweight comfort
NoTubes magic trick
Low-volume internal profile that supports gravel tyre stability
Renowned tubeless sealing performance for fewer flats and easy setup
Instant seal tech
Lightweight comfort
NoTubes magic trick
Low-volume internal profile that supports gravel tyre stability
Renowned tubeless sealing performance for fewer flats and easy setup
$900-1200 USD
The ENVE SES 3.4 Disc Tubular is tuned for aero efficiency with SES (Smart ENVE System) shaping and race-grade layups, providing superior stiffness and predictable handling in crosswinds. It typically sits at a higher price point than more value-focused rims like Zipp or Reynolds but offers measurable aerodynamic and material optimization that benefits racers chasing marginal gains in disc brake tubular setups.
Balanced aero-climb
Featherlight roll
Balanced aero-climb
Featherlight roll
Review Summary
"Users report outstanding stiffness-to-weight, confident cornering and excellent aero performance across varied conditions, with build quality and finish frequently singled out. Criticisms are mainly the very high cost and occasional service lead times."
Crosswind calm
SES-tuned rim shape balancing low drag with predictable crosswind behavior.
Crosswind calm
SES-tuned rim shape balancing low drag with predictable crosswind behavior.
Enhanced Physical Well-Being
Recreational Enjoyment
Skill Development & Mastery
The ENVE SES 3.4 Disc Tubular is tuned for aero efficiency with SES (Smart ENVE System) shaping and race-grade layups, providing superior stiffness and predictable handling in crosswinds. It typically sits at a higher price point than more value-focused rims like Zipp or Reynolds but offers measurable aerodynamic and material optimization that benefits racers chasing marginal gains in disc brake tubular setups.
Balanced aero-climb
Featherlight roll
Crosswind calm
SES-tuned rim shape balancing low drag with predictable crosswind behavior.
High-modulus carbon layup engineered for excellent power transfer and durability.
Balanced aero-climb
Featherlight roll
Crosswind calm
SES-tuned rim shape balancing low drag with predictable crosswind behavior.
High-modulus carbon layup engineered for excellent power transfer and durability.
$3,800-4,800 USD