Permeants

Permeants ST-09 680g Super Lightweight One-piece Road Disc Frame

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$1,250.00

~~$2,000.00~~ $1,250.00

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颜色: UD matte

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Specification	Details
Model No.	Permeants ST-09
Fork	Disc brake fork
Frame Size	S / M / L
Version	One-piece mold
Type	Endurance Road Frame
Material	EPS + T1000 + T1100+M65J Carbon Fiber
Max Tire Size	700 × 35C
Headtube	1-1/2″ to 1-1/2″
Axle Spacing	Front: 100 × 12 mm, Rear: 142 × 12 mm
Bottom Bracket	T47 (86.5 mm)
Rear Hanger	UDH (Universal Derailleur Hanger)
Seatpost	0°, 380 mm length, approx. 99 g
Disc Brake Compatibility	140 mm/160 mm rotors
Frame Weight	680± 10 g( Unpainted with no aluminum components ) 760 ± 20 g (M size, UD matte with alloy parts)
Fork Weight	320 ± 15 g
Cable Routing	All internal, fully hidden
Package Includes	Frame + Fork + Seatpost + Clamp + Thru Axle
Height Recommendation	S: 166–172 cm, M: 172–178 cm, L: 178–184 cm

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Road Frame

Permeants ST-09

PRO ULTRA-LIGHT FRAME
Frame: 680g │ Fork: 320g │ Seatpost: 99g

Tour-tested stiffness mirrors Giant TCR's precision handling while shedding 300g total weight. Fully compliant with EU EN 14781 safety standards. Engineered for podium-climbing efficiency.Lighter. Stiffer. Smarter.

bottom bracket

T47*86MM THREADED

T47 has a larger bottom bracket area,
can be easily compatible with more types of cranks, threaded installation,
convenient for disassembly and maintenance, and with a larger bottom bracket structure,it can achieve more efficient and harder pedaling rigidity

Manufacturing process

One-Piece EPS Process

Using EPS technology to make the inner wall
of the car model smoother, effectively
reducing the amount of carbon fiber used,
making the car body lighter, and making
the frame production more stable and safer

One-piece molding eliminates joints and weak spots, creating a stiffer, stronger carbon road frame with superior ride quality and weight savings.

Carbon fiber material

Toray Hybrid Carbon Fiber T1100/T1000/M65J

Toray Hybrid Carbon Fiber T1100/T1000/M65J
Ultimate performance blend: T1100 (7GPa strength)+ T1000 (balancing toughness) + M65J (640GPa modulus). Optimized for aerospace-grade stiffness/weight ratios & vibration damping. Ideal for elite bikes, drones, and F1 components

Picture of the tail hook of the ST-09 with the original factory

Derailleur Hanger

UDH Derailleur Hanger

Official specifications include an ultra-light custom UDH derailleur hanger.
Its structure is identical to standard UDH hangers, but we use 7075-T6 high-strength aluminum alloy to significantly reduce weight.
Customers can choose between two models:

Standard UDH: Default option, 19g
Direct Mount UDH: 24g
Contact customer service to switch to the Direct Mount option.

Seatpost

Ultra-light Elastic Seatpost

Crafted from T1000 carbon fiber, our seatpost weighs only 99g at the default 400mm length. Even with full aluminum alloy accessories, the total weight is merely 147g. Through structural optimization and synergy with the frame's seat tube design, this seatpost delivers spring-like suspension, ensuring a comfortable ride experience while seated.

Carbon Fork

Ultra-light & High-Strength Fork

Crafted from M65J + T1100 hybrid carbon fiber, this fork achieves a raw weight of only 320g (pre-steerer cutting). Post-painting weight remains approximately 335g (color-dependent). Beyond its lightweight excellence, it delivers exceptional longitudinal stiffness for efficient power transfer and lateral rigidity for precise steering control, effortlessly passing EU safety standards. During sprints, it ensures zero power loss by minimizing flex.

TIRE Capacity

MAX 35C Tire

We've noticed growing demand for larger tire clearance. Our frame now accommodates up to 35c tires—a rare capacity for road frames. You can install virtually any road tire without clearance concerns.

Some riders even fit gravel tires for off-road adventures! It rides like a gravel bike, despite lacking a 410mm chainstay, with users reporting equally superb performance!