Light bicycle flash C25 disc brake triathlon tt rear full disc carbon wheel 20260718102108 f59659

brake triathlon tt rear full disc carbon wheel Light bicycle flash c25 disc 20260715141233 fa9cc1

flash C25 disc brake triathlon tt rear full disc carbon wheel Light bicycle 20260715141237 835f45

disc brake triathlon tt rear full disc carbon wheel Light bicycle flash c25 20260715141240 6b36e7

C25 disc brake triathlon tt rear full disc carbon wheel Light bicycle flash 20260715141244 4db221

Build Your Falcon Pro WHEEL WFlash-C25d-R

All wheels are 100% customizable at Light Bicycle. If your preferred specs are not listed, feel free to contact us (sales@lightbicycle.com) with your special requirements described.

WFlash-C25d-R

Global Shop

EU Shop

Ships worldwide. See what's on sale>>

Center Channel Hole This is a required option.

No Access Holes

DEFAULT SETTINGS

RIMS

Matte, UD, hook, blank (no decal), 24h, with drain holes

Paintless, UD, blank (no decal), 28h, with access holes

HUBS

DT Swiss 350 Straightpull Centerlock Shimano Road 11s 36t

12*100mm (F) & 12*142mm (R)

DT Swiss 350 Straightpull Centerlock Sram XD 18t

15/110mm (F) & 12/148mm (R) boost

SPOKES & NIPPLES

Sapim CX Sprint-rear drive side / CX Ray-other sides

Sapim aluminum black external

Sapim CX Ray & Sapim aluminum black external

ACCESSORIES

2 valves & 1 spare 18T ratchet

2 valves & 2 adapters (centerlock to 6-bolt)

Note: the wheelset price includes the warehouse transfer cost ($80).

Piece Weight: g+/-

Subtotal: USD + (discount price)

Lead time: typically ships in 3 business days

ADD TO CART You missed some options.

We do not stock it at the Australian shop. See what's available.

This product is available from the Global shop only.

Please fill out this form if you are looking for a custom wheelset.

We'll get back to you soon to talk about the special requests via email.

Our apologies, we do not offer this item at the Global warehouse.

Please order from other warehouses. Feel free to contact us (sales@lightbicycle.com) if you want to customize. We’ll get back to you in 24hrs.

Our apologies, we do not stock this item at the US Shop. Check this link to see what items we stock, or send us an email to discuss.

Our Global Shop can make any rim model and ship worldwide. Please fill out this form with your special requests if you want custom rims/wheelsets. We will get back to you via email to discuss in 24hrs.

Our apologies, we do not stock this item at the CA Shop. Check this link to see what items we stock, or send us an email to discuss.

The wheelsets are still in transit to this shop. We’ll update this page when they’re available. Learn more about our European shop.

You can order this product from our Global or North American shops.

Please fill out this form with your special requests if you want to customize it. We will get back to you in 24hrs via email.

DEFAULT SETTINGS

Piece Weight: g+/-

Subtotal: USD +

Lead time:

ADD TO CART

Shopping Style

Options Features	Quick Buy	Full Custom
Options Features	Inventory	Parts in stock (Assembled upon order)	Manufactured upon order
Customization	Least customizable	100% Customizable
Lead Time	≤ 3 days	4 weeks typically
Availability	Limited models	All models
Shipping	Worldwide	Worldwide

Quick Buy (In Stock)

Full Custom (Made to Order)

Rims

Hook, matte, UD, with drain holes

Hook, matte, UD, with access holes, with drain holes

Standard, hook, paintless, UD, 5-year warranty, with access holes, with drain holes

Front Flyweight / Rear Standard, paintless, UD, 5-year warranty, no drain holes

Paintless, UD, 5-year warranty, no drain holes

Grooved graphene surface, hook, matte, UD, with access holes, with drain holes

Grooved graphene surface, hook, matte, UD, no access holes, with drain holes

Matte UD, 32H, Centered (Staggered)

Hubs

Hope Pro 4 Fatsno J-bend 6-bolt

15/150mm (F) & 12/197mm (R) Sram XD

Straightpull centerlock black 24H

12/100mm & 12/142mm

Shimano Road 11S

DT Swiss straightpull / Bitex j-bend, centerlock, 28H

J-bend, DT Swiss 6-bolt / Bitex centerlock, 32H

15/110mm boost & 12/148mm boost Sram XD

DT Swiss straightpull / Bitex j-bend, black, 20H front / 24H rear

100mm QR & 130mm QR Shimano Road 11S

Spokes

Sapim CX Ray black

Sapim D-Light

Accessories

No decals/valves/tape

No decals/valves/tape/pads

No decals/valves

Piece Weight: g+/-

Subtotal: USD +

Lead time:

ADD TO CART

Hub Brand This is a required option.

Model	Weight	POE	Cost	Reliability	Quality	Unique Feature	Color Options	Warehouse Location	Website
DT 350	374g	18/36/54	Low	Better	Good	Quiet and reliable (18t option)	One	China	DT SWISS
DT 240S	317g	18/36/54	Medium	Best	Best	Quiet and reliable (18t option)	One	China/N.A.	DT SWISS
DT 240 EXP	299g	EXP 36	Medium	Best	Best	Quiet and reliable (EXP 36 )	One	China/N.A.	DT SWISS
DT 180	290g	EXP 36	High	Best	Best	Super Light, EXP 36	One	China/N.A.	DT SWISS
Chris King	326g	45	High	Best	Best	Rebuildable bearings	Nine	China	CHRIS KING
Industry Nine	327g	60	Medium	Better	Best	Loud, engagement	Eleven	China/N.A.	INDUSTRY NINE
Onyx	434g	Infinite	High	Better	Best	Silent, sprag clutch	Eighteen+ (Custom Available)	North America	ONYX
Carbon-Ti	270g	56	High	Better	Best	Extreme Light	Nine	China	Caron-Ti
LB Pace-Hub	275/285g	36/48	Low	Better	Good	Light, reliable, economic	One	China	Light Bicycle
Light Bicycle Speed-Hub Gen2	295g	36	Low	Better	Good	Proprietary for Carbon Spokes Steel Bearing/Ceramic	Two	China	Light Bicycle
Light Bicycle Pace-Hub	275/285g	36/48	Low	Better	Good	Economic, reliable, light	One	China	Light Bicycle

Besides hubs listed to choose online directly, you could also have more others built to the wheels on your custom order by contacting us.
See more about Light Bicycle's FULL HUB OPTIONS

* POE = Points of Engagement

* DT hubs come standard with an 18t star ratchet but are upgradeable to 36 or 54t.

* Average weight will vary slightly depending on axle and freehub combination.

DT SWISS 240 EXP

Light Bicycle SL Road Disc (for disc wheel)

Rear Axle This is a required option.

If the size you need is not listed, please contact us and we'll reach out to you to confirm your order.

By default, skewers are only offered with QR hubs.

12 / 142mm

Freehub Body This is a required option.

1. Shimano Road 11S works with 11/12-speed cassette directly or 8/9/10-speed mountain cassette with a spacer(s) .
2. Shimano MTB 10/11S works with 8/9-speed directly or 10-speed with a spacer or 11-speed road cassette if one of the inner cogs removed.
3. Campagnolo (Campy) 11S works with 9/10/11/12-speed Campy cassette with no spacers required.
4. Sram XDR could run XDR (road) cassette inherently and is compatible to run mountain bike XD cassette with a 1.85mm spacer.
5. Shimano Micro Spline (MS) works with 12-speed MS cassette only.

Shimano Road 11S

Sram XDR

Brake System This is a required option.

6-Bolt is the more common traditional option.
Centerlock uses a unique interface and it is also convertable to 6-bolt. If you need the conversion kit, please contact us. Our hubs are provided without rotor lockrings by default.

Center lock

Hub Color This is a required option.

Black

Ratchet This is a required option.

DT Swiss hubs use star ratchets and are available in 4 different models with varying points of engagement.

18T - Deepest teeth, slowest engagement, least amount of maintenance, suitable for powerful riders.

36T - Happy medium, doubles the engagement points.

54T - Super fast engagement, but shallow teeth require more careful re-greasing and the thru-axle should be checked every ride.

24T - Made out of hardened steel as e-bike specific.

EXP 36 - With only a single spring, making the hubs faster and lighter. More precise contact makes a longer lifespan.

EXP 54 - Upgraded from EXP 36 to gain incredibly faster engagement.

36T

EXP 36

Valve Cover This is a required option.

With Valve Cover Sticker

Brake System This is a required option.

Disc

Finish This is a required option.

The Precision C21 is offered with the distinctive 'Paintless' finish to align with our Pro series. And the gorgeous 'Piano Black' (perfect glossy) is also an option of mind-blowing.

Paintless

Weave This is a required option.

The layup schedule is predetermined for each model, but you can choose the outer layer for cosmetic appearence.

The purely hand-braided "Sunflower" weave paired with "Paintless" finish delivers a distinctively futuristic appearence.

More info about Weave >>

Valve Hole Type This is a required option.

Presta

Rim Warranty This is a required option.

5 Years

Lifetime USD +100/rim

Decal This is a required option.

Grey Laser Engraving (Falcon Pro)

Full Custom (Laser only) USD +5

Blank (No decal) USD +5

Wheel Bag This is a required option.

Our all-new single wheel bag provides reliable storage for your wheel. Plus, an internal pocket is designed to store skewers and other tools. The wheel bag safely and comfortably accommodates most road and mountain bike wheels, including 700C, 26", 27.5", and 29" wheels. The wheel bag is with Light Bicycle logo by default. If you hope to get one without logo, please leave a note at checkout.

For a wheelset product, when selecting "Add Wheel Bag", you'll get two wheel bags; while for a single front/rear wheel product, you'll get one wheel bag.

None

Add Wheel Bag USD +25.5 each

Valve Stem This is a required option.

Apply Valve Stem

Send Photos for Shipping Confirmation This is a required option.

Send Photos for Shipping Confirmation could be offered at NO extra charge so that you could have your tailored products viewed/inspected before shipping and the photos shared with your friends in advance.

It takes about 1~3 business days added to the lead time subject to the orders queuing status.

If you have any special requirement on the photos, such as weight measurement, please leave a note at checkout.

Yes (1-3 days longer)

No ( I do not need photos)

Recon Pro orders start shipping in October.

- + PCS

Recon Pro orders start shipping in October.

- + PCS

Piece Weight: 775.00g+/-25

Subtotal: USD 1999+

Piece Weight: 0.00g+/-25

Subtotal: USD 0+

PREVIOUS NEXT

WHEELSET SPECS

RIMS

Our Pro series comes with a 5-year warranty (lifetime optional), while the non-pro with a 3-year warranty and crash replacement.

Model Flash C25 disc
Introduction >>
Material Toray T700 & T800 Premium Carbon Fiber
Size 29”/700C
Series FALCON PRO
Intended Use Road / TT / Tri
Bead Type Hook
Tubeless Capable Yes
Inner/Outer Width 25mm/30mm
Weight (hub excluded) 610+/-25g
Max Cyclist Weight (on flat ground) 150kg/ 331lbs
Max Tire Pressure (with 25C) 130psi/ 8.96bar
Recommended Tire Width 28C-38C

HUBS

We keep in stock the most popular axle sizes and colors of some well-liked hub models. If you want a special order, feel free to contact us (sales@lightbicycle.com).

Model DT SWISS 240 EXP, Light Bicycle SL Road Disc (for disc wheel)
Rear Axle Size 12 / 142mm
Driver Body Shimano Road 11S, Sram XDR

What does it feel like to ride the lightest full disc wheel ever created? Meet the all-new Flash C25—a masterpiece of carbon engineering meticulously crafted for triathletes and time trialists racing against the clock. Weighing a record-breaking 775 grams paired with Light Bicycle Road Disc hub, this groundbreaking wheel shatters the weight barrier to deliver instantaneous acceleration and effortless climbing, seamlessly converting every watt of power into podium-winning momentum.

Optimized for modern racers, it features a progressive 25mm internal width for peak tubeless tire performance, backed by our patent-pending reinforcement technology and specialized internal support structure for monumental lateral stiffness during high-torque efforts. Proven in the lab and on the road since its stunning 2026 Eurobike debut, the Flash C25 maintains exceptional stability under high pressure and features an exclusive, default laser-etched Constellation Map—a year-round badge of honor for dedicated cyclists.

Ready to dominate the course? Rewrite your personal records with the world's lightest disc wheel and secure your ultimate speed advantage today.

Rims

Our Pro series comes with a 5-year warranty (lifetime optional), while the non-pro with a 3-year warranty and crash replacement.

Model: Flash C25 disc
Introduction >>
Material: Toray T700 & T800 Premium Carbon Fiber
Size: 29”/700C
Series: FALCON PRO
Intended Use: Road / TT / Tri
Bead Type: Hook
Tubeless Capable: Yes
Inner/Outer Width: 25mm/30mm
Weight (hub excluded): 610+/-25g
Max Cyclist Weight (on flat ground): 150kg/ 331lbs
Max Tire Pressure (with 25C): 130psi/ 8.96bar
Recommended Tire Width: 28C-38C

Hubs

We keep in stock the most popular axle sizes and colors of some well-liked hub models. If you want a special order, feel free to contact us (sales@lightbicycle.com).

Model: DT SWISS 240 EXP, Light Bicycle SL Road Disc (for disc wheel)
Rear Axle Size: 12 / 142mm
Driver Body: Shimano Road 11S, Sram XDR

Please carefully inspect your package when unboxing it and contact us immediately if it is damaged or if anything is missing.

Together we can make this planet better. Join our sustainability program to reduce paper waste using digital docs.

Download user guides >>

Overview

What does it feel like to ride the lightest full disc wheel ever created? Meet the all-new Flash C25—a masterpiece of carbon engineering meticulously crafted for triathletes and time trialists racing against the clock. Weighing a record-breaking 775 grams paired with Light Bicycle Road Disc hub, this groundbreaking wheel shatters the weight barrier to deliver instantaneous acceleration and effortless climbing, seamlessly converting every watt of power into podium-winning momentum.

Optimized for modern racers, it features a progressive 25mm internal width for peak tubeless tire performance, backed by our patent-pending reinforcement technology and specialized internal support structure for monumental lateral stiffness during high-torque efforts. Proven in the lab and on the road since its stunning 2026 Eurobike debut, the Flash C25 maintains exceptional stability under high pressure and features an exclusive, default laser-etched Constellation Map—a year-round badge of honor for dedicated cyclists.

Ready to dominate the course? Rewrite your personal records with the world's lightest disc wheel and secure your ultimate speed advantage today.
Specs
Rims

Our Pro series comes with a 5-year warranty (lifetime optional), while the non-pro with a 3-year warranty and crash replacement.

Model: Flash C25 disc
Introduction >>

Material: Toray T700 & T800 Premium Carbon Fiber

Size: 29”/700C

Series: FALCON PRO

Intended Use: Road / TT / Tri

Bead Type: Hook

Tubeless Capable: Yes

Inner/Outer Width: 25mm/30mm

Weight (hub excluded): 610+/-25g

Max Cyclist Weight (on flat ground): 150kg/ 331lbs

Max Tire Pressure (with 25C): 130psi/ 8.96bar

Recommended Tire Width: 28C-38C

Hubs

We keep in stock the most popular axle sizes and colors of some well-liked hub models. If you want a special order, feel free to contact us (sales@lightbicycle.com).

Model: DT SWISS 240 EXP, Light Bicycle SL Road Disc (for disc wheel)

Rear Axle Size: 12 / 142mm

Driver Body: Shimano Road 11S, Sram XDR
Warranty

For Non-Pro Series Rims: From the date of purchase, 3-year Standard Warranty.

For Pro Series Rims: From the date of purchase, 5-year Pro Warranty as standard and an upgraded optional lifetime Premium Warranty with minimum charge.

Crash Replacement: It is applicable with the same period as the warranty time range that you purchased for the rims with 10% /25% discount for Non-Pro series /Pro series.

Learn More >>
In The Box

Please carefully inspect your package when unboxing and get in touch with us immediately if the package is damaged or anything is missing.

Together we can make this planet better. Join our sustainability program to reduce paper waste with the use of digital manuals.

Download user guides >>

Gallery

Be the first to review this product and help riders of your style choose the most suited.

Write a review now >>

Rider Story

We would love to hear your story and earn a $50 reward. Tell us your personal riding story that highlights the joys and challenges of riding.

Share your rider story now >>

Get in touch

Feel free to leave a comment if you have any questions or suggestions on our products or other issues.

Please leave your name here.

E-mail is required for further contact.

Please enter a message.

No.	Test Item	Test Standard	Compliance Rate	Measured Data
1	Drops Stiffness Vertical Test (Upwards)	50kgf static pressure deformation ≤ ( 11 ) MM	100%	10.01/9.81
2	Drops Stiffness Vertical Test (Downwards)	50kgf static pressure deformation ≤ ( 11 ) MM	100%	10.12/9.94
3	Hoods Stiffness Vertical Test (Downwards)	30kgf static pressure deformation ≤ ( 6 ) MM	100%	5.26/5.26
4	Handlebar In-Phase Loading Fatigue Test	Stage1: F=(+/-400) N=(+/-40.8) kgf, Frequency 2HZ, Cycles (150000)	100%	150,000 cycles, product intact
5	Handlebar In-Phase Loading Fatigue Test	Stage2: F=(+/-440) N=(+/-44.9) kgf, Frequency 2HZ, Cycles (100000)	100%	100,000 cycles, product intact
6	Handlebar Out-Phase Loading Fatigue	Stage1: F=(+/-280) N=(+/-28.6) kgf, Frequency 2HZ, Cycles (150000)	100%	150,000 cycles, product intact
7	Handlebar Out-Phase Loading Fatigue	Stage2: F=(+/-308) N=(+/-31.4) kgf, Frequency 2HZ, Cycles (100000)	100%	100,000 cycles, product intact
8	Impact Test	55J	100%	55J
9	Product Weight	( 250 +/-15 ) g	100%	259g

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Specialized	Tarmac SL8	Colnago	V3
	Tarmac SL7		V4R/C68
	ALLEZ SPRINT		V3R/C64
	Aethos S-Works 2026		V5RS
Trek	MADONE SLR GEN8	Cannondale	SUPERSIX EVO G4
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Please provide bike photo if you have any of the bikes listed below.
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FOCUS	IZALCOMAX
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Ribble	CGR SL
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TIME	ADH
Wilier	CENTO 10
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Can't find your bike model? Please let us know at sales@lightbicycle.com.

Use	Lightweight Road Riding
Width	340/380mm, 360/400mm, 375/415mm, 395/435mm
Stem Length	90mm, 100mm, 110mm, 120mm, 130mm
Material	Toray T700 & T800 Carbon Fiber
Finish	Matte/Glossy/Paintless/Custom Paint
Weave	UD/Marble
Weight	Starting from 250g
Reach	70mm
Drop	123mm
Stack	36.3mm
Steer Size	1-1/8″ (28.6mm), OD2 not Compatible
Flare	9°
Sweep	4°
Stem Angle	-10°
Impact Strength	Surpasses 55J Impact Test
Rider Weight Limit	120 kgs
Cable Routing	Internal & External
Computer Mount	Default Alloy Aluminum or 3D-Printed Titanium
Spacer	Universal 52mm/56mm or 3D-Printed Custom
Bolts	Titanium
Warranty	3-Year Warranty, contact us for our US$129 Handlebar Free Replacement Program.

Build Your Falcon Pro WHEEL WFlash-C25d-R

Overview

Specs

Warranty

In The Box

Rims

Hubs

Overview

Specs

Rims

Hubs

Warranty

In The Box

Gallery

Rider Story