Astral Veil 4 Carbon Disc Rim
The Astral Veil 4 is the all-rounder in Astral's carbon rim-brake road family: the same wide, rounded profile and carbon brake track as the Veil 3 and 6 at the mid depth that balances aero, weight and crosswind stability for riders who want one rim-brake carbon wheelset for everything. It is the Veil we build most.
This page covers the Astral Veil 4 Carbon Disc Rim in 700c. The Veil 4 is sold here only inside a wheel we build: choose the hub, spokes and nipples in the configurator and the finished wheel ships from Georgia, laced, tensioned and trued by hand.
Design and construction
The Veil is a carbon clincher with a wide, rounded aero section that lets a 25 to 28mm tire flow into the rim and keeps the airflow attached in a crosswind, a machined carbon brake track that works with carbon-specific pads, and Astral's spoke-hole angling so the nipples sit straight. The three depths share the profile and the bed; the layup is tuned for each. External nipples, standard J-bend spokes, rim brake only. Use carbon-specific brake pads, which we supply with the wheel.
How it rides
A Veil 4 wheelset is the sweet spot for most rim-brake road riders: noticeably faster than a shallow rim on the flat, still light enough to climb on, and calm enough in a crosswind that you forget it is a deep rim. The carbon brake track works well with the pads we supply. For climbing the Veil 3 is lighter; for time trials the Veil 6 is faster; for an everyday race and training wheel, the Veil 4 is the Astral rim we recommend.
Specifications
| Wheel size | 700c |
|---|---|
| ERD | 558 (29in) |
| Inner width | 19.5 mm |
| Depth | 42 mm |
| Drillings | 24h |
| Weight | 445g (700c/29in) |
| Material | Carbon Fiber |
| Tire type | Clincher Tubeless Compatible |
| Brake | Disc |
| Profile | Triangle |
| Nipples | External |
| Finishes | black |
This version
This version is the Veil 4 in 700c, drilled 24h, about 445g, 19.5mm inside, 42mm deep, disc. Where the same rim is sold in another size or brake type, that is a separate listing with its own page.
The disc version of the Veil 4 has no brake track, so the sidewall is a plain extrusion that saves a little weight and never wears; it is the one to choose for any disc-brake frame. The rim-brake version, listed separately, has a machined sidewall.
Sizes, fit and compatibility
The Astral Veil 4 Carbon Disc Rim comes in 700c and 24h drilling. It is a rim-brake road rim with a carbon brake track. We build the Veil 4 on Bitex RAF and RAR 12, DT Swiss 350 and 240, White Industries T11, Chris King R45 and Velocity Race Road hubs, usually with Sapim CX-Ray or CX-Sprint spokes or DT Aerolite, and brass or alloy nipples.
Tire range on the Veil 4 is 25 to 28mm. Pick road as your bike type in the configurator and it recommends a spoke count and lacing pattern.
Build it into a wheel
This rim is live in our Custom Wheel Program for gravel and road disc and track and road single-speed builds. Start a build with the Astral Veil 4 Carbon Disc Rim and the configurator opens with this exact rim pinned at the top of the Astral / Rolf list — you choose the rest of the parts and it validates every combination as you go.
Spoke head is decided by the hub, not the rim: this rim builds equally well with J-bend or straight-pull spokes, and the configurator only offers the spokes that match the hub you pick.
How Astral tests its rims
Astral Cycling is the rim brand of Rolf Prima; both operate from one facility in Eugene, Oregon, where Rolf Prima states alloy rim production has been in-house since 2014. Astral joins alloy rims with a press-fit sleeve about 2.5 inches long weighing 4-5 g that doubles the wall thickness at the joint, avoiding the heat-affected zone of welding. All wheels are hand-built in Eugene. Rolf Prima states it does not farm out testing and has logged "over 10,000 hours of lab testing to above industry standards."
Warranty: Astral states alloy rims are covered two years and carbon rims five years for the original owner, excluding impact damage; Rolf Prima wheels (2016 and newer) carry five years, bearings two years, plus lifetime discounted crash replacement for registered wheels.
Astral's videos
From Astral
Certifications
- Made in USA (alloy rims and wheels) — Astral and Rolf Prima state alloy rims are rolled and all wheels hand-built in their Eugene, Oregon facility; rim production in-house since 2014 (source)
- ISO 4210 base + in-house standard — Fatigue drum at 47 mph vs ISO 15 mph, life requirement 66% above ISO; UCI 40 J impact plus higher in-house level; ISO 4210 dry/wet brake tests (source)
- UCI note — Rolf Prima FAQ: Aspin and Elan family are 'Standard' wheels not requiring UCI approval; no approved-model list verified (source)
- Rolf Prima Certainty — In-house engineering and testing lab, eleven patents, over 10,000 hours of lab testing, 5-year warranty, lifetime crash replacement (source)
Sources on Astral's site:
- Testing – Astral Cycling
- FAQ's – Astral Cycling
- Astral Rim Warranty – Astral Cycling
- Technology – Astral Cycling
- Rim Joining: The Process and the Mystery – Astral Cycling
Everything in this section is published by Astral. ProWheelBuilder is the wheel builder, not the tester, and the rim reaches us as the maker ships it.
Building it at ProWheelBuilder
Astral makes the Veil 4; ProWheelBuilder is an independent wheel builder in Georgia, not the manufacturer. Spokes are cut from the ERD we measure on the actual rim, the wheel comes up in stages on a tensiometer, and it is stress-relieved and trued before it goes in the box; tape and a valve go on if you ask.
The configurator filters to what fits, crosses out what is not made, and prices the build as you go.
Warranty
Manufacturer's warranty. Rolf Prima gives a one-year limited warranty on its wheels under normal use. Astral is Rolf Prima's rim brand; ask us and we will confirm the current terms for the exact rim before you buy.
ProWheelBuilder. Wheels we build around this part are covered by our own one-year warranty alongside the maker's. Within the year: broken spokes replaced regardless of cause, and the labor on the wheel - truing, re-tensioning or a complete rebuild - included. A manufacturer-covered rim or hub failure is a claim we make and manage for you; one they will not cover is answered with an eligible replacement at 25% off retail. Shipping each way is yours. Parts you supply yourself fall outside it.
Full terms are on our Policies & Warranty page.
Veil 4 Carbon Disc Rim questions
What tire width suits this rim?
At 19.5mm inside this is a road width. It suits roughly 25 to 32mm tires, which is where most road bikes now sit, and it will run a 23 if you still want one. Go much wider than 32 on this rim and the tire starts to balloon above the sidewalls and squirm when you lean on it.
Which spokes and nipples suit the Veil 4?
For most riders a double-butted spoke such as Sapim Race or DT Competition with brass nipples; lighter riders can go to Sapim Laser or CX-Ray. The configurator recommends a gauge and count for the Veil 4 from your bike type and weight.
Veil 3, 4 or 6?
Veil 3 for climbing and gusty roads, Veil 4 for all-round riding and racing, Veil 6 for time trials, triathlon and flat courses.
Is the Veil disc compatible?
No. The Veil is a rim-brake rim with a carbon brake track; the Luna and Serpentine are Astral's carbon disc rims.
Which brake pads do I need?
Carbon-specific pads, which we supply with the wheel. Never use pads that have been run on an alloy rim.
Is the Veil tubeless?
It is a carbon clincher; ask us about tubeless setup for the depth you choose.
Is ProWheelBuilder the manufacturer of the Astral Veil 4 Carbon Disc Rim?
No. The rim is made by Astral; we are the wheel builder in Georgia who laces it into a finished wheel to your spec and stands behind the build.
Not sure? Text or leave a voicemail on 470-253-0929 or email info@prowheelbuilder.com — you will be talking to the people who build the wheels.
