CeepoViper

Triathlon2025Viper 2.0 (disc, fully integrated cabling)Disc brakesNot UCI legal

The second-generation Viper is Ceepo's mid- to long-course triathlon frameset: a conventional double-diamond frame with truncated airfoil tubes, fully hidden cables and hoses, and carbon shields that tuck the flat-mount disc calipers out of the wind. Ceepo positions it as a no-fuss, travel-friendly race bike that uses standard parts and a reversible seatpost for fit, and it is not designed to UCI rules.

From: —
Builds: 1
Sizes: 3
Frame weight: 1,127 g2.48 lb

Design sketch, generated from the manufacturer's photo

Our verdict

No overall score: there's no complete-bike price to rate

A light, no-fuss triathlon frameset for athletes who want to build their own bike and travel often: standard parts, any aerobar and multitool-only packing. You give up integrated storage and hydration, and there are only three sizes. No aero figures are published.

Scored Oct 2026

+ Easy to travel with and service
− Little integrated hydration or storage

AI-drafted from the specs on this page and reviewed before publishing. Scores are relative to every bike in the catalog when they were given, so they drop as newer bikes and parts raise the bar.

Aero: 68/100
Frame: 78/100
Hydration & storage: 50/100
Fit: 62/100
Practicality: 88/100

How each category is scored

Bike duel

Frame & platform

What each race allows

Frame & fork

Frame material: Carbon (Toray)
Fork material: Carbon
Frame weight: 1,127 g2.48 lb
Fork weight: 506 g17.8 oz
Weight measured on: Frame size M unpainted; fork with uncut 300 mm steerer (Ceepo)
Frame sizes: S, M, L
Colours: Pure White, Blue Black

Compatibility & standards

Brake type: Flat-mount hydraulic disc
Max rotor size: 160 mm
Wheel size: 700c
Max tire width: 28 mm
Bottom bracket standard: BB386EVO
Front axle: 12x100 mm thru-axle (M12 x 1.5)
Rear axle: 12x142 mm thru-axle (M12 x 1.5)
Drivetrain compatibility: Shimano Di2 and mechanical, SRAM eTap AXS and mechanical, Campagnolo EPS and mechanical, Classified PowerShift, FSA K-Force WE
Mechanical shifting possible: Yes
1x compatible: Yes
Max chainring: 54T
Cable routing: Fully internal, including the front end

Hydration & storage

Integrated storage: No
Storage details: Top-tube mounts for an add-on storage box

Fit & adjustability

Aerobar system: FSA SMR stem system; third-party aerobars
Third-party aerobars possible: Yes
Seatpost type: Reversible carbon seatpost
Fit notes: Mechanical shifting is limited to 1x. Chainring range 50/34 to 54/40 for 2x, 40-54T for 1x. FSA headset No.55R 1.5 in. An optional carbon saddle-rail clamp is sold by Ceepo.

Aerodynamics

Manufacturer aero claims: Ceepo's Aero Brake Technology hides each caliper behind a carbon shield; lowered seatstays and hidden cables further cut drag (no numbers published).
Tube profile: Truncated airfoil (Kammtail) tubes

Travel, maintenance & warranty

Travel & packing: Ceepo says the bike can be packed and rebuilt with a multitool without losing the fit position
Fit kept when packed: Yes
Headset bearings: FSA No.55R 1.5" ACR headset
Proprietary parts: Seatpost; otherwise off-the-shelf parts (FSA headset and SMR stem)
Frame warranty: 3 years from purchase on the frameset, original owner with dated proof of purchase

Photos

Ceepo Viper, drive side — © CEEPO International Ltd.

Ceepo Viper in white, three-quarter front view — © CEEPO International Ltd.

Design sketches

Design sketch of the Ceepo Viper, side view — Side view · Design sketch, generated from the manufacturer's photo

Design sketch of the Ceepo Viper, three-quarter view — Three-quarter view · Design sketch, generated from the manufacturer's photo

Design sketch of the Ceepo Viper, front view — Front view · Design sketch, generated from the manufacturer's photo

Builds & components

Highlighted rows differ between builds. Green marks the best value.

Ceepo Viper builds
	Viper frameset
Overview
Type	Frameset
Notes	Ceepo sells the Viper as a frameset (frame, fork, reversible seatpost, headset, thru-axles, Di2 battery adaptor) through dealers and does not publish an MSRP on its site.
Cockpit
Stem	FSA SMR
Stem length	80 (S), 90 (M), 100 (L)
Headset	FSA No.55R 1.5 in ACR
Saddle & seatpost
Seatpost	Ceepo Reversible seatpost
Material	Carbon

Viper price & value

Building up the Viper frameset

Included: Headset, Seatpost, Stem.

Still to buy: Groupset, Crankset, Cassette, Chain, Brake calipers, Wheelset, Tires, Aerobar system, Saddle, Pedals.

Spare & upgrade parts from Ceepo

Part	Part number	Price
Seatpost, wide range, zero offset (Ritchey one-bolt head)	SP2159	$120$120$120
Seatpost clamp bolt and washers for SP1999 seatposts	—	$2$2$2
Saddle clamp caps for 7x7 mm rails (SP1999 seatpost)	—	$18$18$18
Shimano Di2 battery holder	—	$15$15$15
BB386 adaptor for Shimano 24 mm cranks	—	$20$20$20
Shim adaptor for 1.5" lower bearingCeepo lists Stinger, Mamba, Viper and Katana as compatible and asks buyers to confirm by email.	—	$3$3$3

Ownership checklist

4 of 5 known checks pass, 2 not published by Ceepo. Why these checks

✕
Threaded bottom bracket
BB386EVO
?
UDH derailleur hanger
✓
Standard 12×142 mm rear axle
12x142 mm thru-axle (M12 x 1.5)
✓
Works with mechanical shifting
✓
Fits third-party aerobars
FSA SMR stem system; third-party aerobars
?
Rear disc wheel compatible
✓
Fit kept when packed

Viper geometry

Ceepo Viper geometry
	S	M	L
Stack	485 mm19.1″	510 mm20.1″	540 mm21.3″
Reach	405 mm15.9″	420 mm16.5″	435 mm17.1″
Seat angle min	81.5°	81.7°	80.5°
Seat angle max	81.5°	81.7°	80.5°
Head tube angle	71°	71°	71.5°
Head tube length	90 mm3.5″	116 mm4.6″	146 mm5.7″
Effective top tube	487 mm19.2″	504 mm19.8″	535 mm21.1″
Seat tube length	430 mm16.9″	470 mm18.5″	530 mm20.9″
Chainstay	400 mm15.7″	400 mm15.7″	400 mm15.7″
Wheelbase	985 mm38.8″	1,008 mm39.7″	1,029 mm40.5″
BB drop	75 mm3″	75 mm3″	75 mm3″
Fork offset	43 mm1.7″	43 mm1.7″	43 mm1.7″
Front centre	596 mm23.5″	620 mm24.4″	640 mm25.2″
Standover	703.8 mm27.7″	740.5 mm29.2″	798.4 mm31.4″
Wheel size	700c	700c	700c
Stem length	80 mm3.1″	90 mm3.5″	100 mm3.9″

Side view & pad range

Ceepo Viper

Your position (optional)Pad stackPad reach

Drawn to scale (how to read it).

Ceepo Viper · M

How the geometry rides

The Viper in size M against the middle size of 42 other bikes: tendencies from geometry, not a ride review (how to read this).

Wheelbase1,008 mm39.7″
shortestlonger than 82% of 42 bikeslongest
Long wheelbase: tends to track straight and feel calm at speed.
Front centre620 mm24.4″
shortestlonger than 95% of 29 bikeslongest
Long front centre: more weight on the rear wheel and more stable front end.
Chainstay400 mm15.7″
shortestlonger than 25% of 53 bikeslongest
Short chainstays: a compact, responsive rear end.

Compare on the stack & reach chart

Good to know

Design
For 2025 Ceepo lengthened the front centre, raised trail, dropped the bottom bracket by 5 mm and steepened the seat angle to put the rider further forward while keeping handling stable.
Source
Aerodynamics
Aero Brake Technology, unique to the Viper, puts a carbon cover in front of each flat-mount caliper so the brakes sit out of the airflow over the fork and frame.
Source
Fit
Ceepo's geometry chart gives 81.65° for size M, against 81.5° for S and 80.5° for L. BikeInsights shows 81.5° for M, but no Ceepo source gives a different figure, so the chart value is used.
Source
Integration
All cables and hoses are hidden, which Ceepo says lowers frontal drag and leaves the aerobars clear for a hydration setup.
Source
Compatibility
Electronic groups can run 1x or 2x, but mechanical shifting is limited to 1x. Chainrings range from 50/34 to 54/40 (2x) or 40-54T (1x).
Source
Travel
Ceepo builds the Viper around standard parts so it can be taken apart and rebuilt for travel with just a multitool.
Source
Maintenance
The 2025 assembly guide covers the FSA SMR stem system, separate cable maps for electronic and mechanical shifting, and the expander plug and seat clamp.
Source
History
The Viper is Ceepo's original triathlon platform; the current version borrows ideas from the Shadow-R and Katana. A 2023 version is described as stiffer and lighter than the version it replaced.
Source

Viper FAQ

Is the Ceepo Viper UCI legal?+

No. The Ceepo Viper is not UCI legal. That is fine for non-drafting triathlon, but it cannot be used in UCI-sanctioned time trials.

How much does the Ceepo Viper weigh?+

The frame weighs 1,127 g (2.48 lb) (Frame size M unpainted; fork with uncut 300 mm steerer (Ceepo)).

What sizes does the Ceepo Viper come in?+

3 sizes: S, M and L.

What seat angle does the Ceepo Viper have?+

The effective seat tube angle can be set between 80.5° and 81.7°.

Does the Ceepo Viper have integrated storage?+

No integrated frame storage. Top-tube mounts for an add-on storage box

What is the tire clearance of the Ceepo Viper?+

Up to 28 mm tires on 700c wheels.

Which groupsets are compatible with the Ceepo Viper?+

Drivetrain compatibility: Shimano Di2 and mechanical, SRAM eTap AXS and mechanical, Campagnolo EPS and mechanical, Classified PowerShift, FSA K-Force WE. Mechanical shifting can be fitted. 1x drivetrains are supported. The largest chainring that fits is 54T. Bottom bracket: BB386EVO.

Can I fit my own aerobars on the Ceepo Viper?+

Yes, third-party aerobars can be used on the Ceepo Viper. FSA SMR stem system; third-party aerobars

Is the Ceepo Viper easy to travel with?+

Ceepo says the bike can be packed and rebuilt with a multitool without losing the fit position

What warranty does the Ceepo Viper frame have?+

3 years from purchase on the frameset, original owner with dated proof of purchase

Is the Ceepo Viper aerodynamic?+

Ceepo's Aero Brake Technology hides each caliper behind a carbon shield; lowered seatstays and hidden cables further cut drag (no numbers published).

Sources

Ceepo Viper data last updated 2026-11-02 · How the data is checked ·