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Frame

Classic fixie: Surly brings back the legendary Steamroller

Mountain bike bottom bracket standards: an overview of the utter chaos

FRAME

- Zéfal Universal Cage Mount is a universal, screwless mount for bottle cages and accessories on almost any bike tube.
- Attachment with silicone-coated Velcro tape and padding, suitable for tube diameters from 27.2 to 80 mm, including mounting screws.
- Standard hole spacing of 64 mm enables compatibility with bottle cages, tool cages, pumps, bags and locks on MTB, gravel and e-bikes.

Zéfal Universal Cage Mount: Finally space for your water bottle

- Editor Jan Timmermann builds one of the first 32-inch mountain bikes, the Leovelo Goliath, with exclusive tuning and standard parts.
- He solders the steel frame himself, helps laminate the carbon wheels and visits the fork manufacturer before all the parts are assembled.
- The build is emotionally charged; every detail is carefully chosen and reminds him of the elaborate do-it-yourself creation story.

Project Goliath: 32-inch hardtail in the Dreambuild

- The Leovelo Goliath is a 32-inch steel hardtail with an upside-down fork, carbon monocoque wheels and a total weight of 11.52 kg.  
- Specialised manufacturers such as Intend, Vecnum, Bike Ahead, Maxxis, Sram and Wolftooth are involved in the construction, in some cases with specially adapted lightweight parts.  
- The focus is on early 32-inch players and brands with transparent, local production that fit in well with the do-it-yourself character of the project.

32-inch steel hardtail with 11.5 kilos: Leovelo Goliath in the bike check

- New Salsa Spearfish C DLX carbon frameset 2026 with Split Pivot suspension, 100-120 mm rear suspension travel, flip chip and 2.55 kg weight (size M).
- Endurance XC geometry with 66.3/66.0° head angle, 77.3/77.0° seat angle, 430-431.2 mm chainstays and adjustable bottom bracket height by 5 mm.
- Equipment: Fox Float SL Factory shock, FSA Orbit headset, BB92, SRAM UDH, 29" wheels up to 2.4", internal dropper cables, price 3499 US dollars.

With Split Pivot suspension: Salsa Spearfish gets frameset upgrade & 3 new colours

- Specialized has grown from Mike Sinyard's hippie one-man business to a globally significant bike manufacturer with cult status and a pioneering role in MTB.
- At the Morgan Hill site, prototypes are created using CNC, 3D printing and the Ride Dynamics department, which are developed for professional riders such as Loic Bruni.
- An in-house, solar-powered wind tunnel laboratory optimises the aerodynamics and ventilation of athletes' positions and all Specialized helmets.

At home with Specialized: A home visit to the Californian headquarters

- Zéfal Z Cage Adapter moves bottle cage on the bike by up to 40 mm and makes better use of narrow frame space.
- 132 mm long bar made of glass fibre reinforced technopolymer, black, weight 22 g, dimensions 17 × 10 × 132 mm.
- Supplied with screws (2× M5×10, 2× M5×16), RRP 9.95 euros, suitable for everyday use, touring and bikepacking.

Flexible bottle cage: Adjustable Zéfal Z Cage adapter saves space in the frame

- Carbon is an anisotropic composite material whose properties depend heavily on fibre orientation, resin system and manufacturing quality.  
- Properly designed, carbon fibre enables lightweight, rigid and durable frames, but requires complex production and expert damage diagnosis.  
- Compared to metal, carbon scores highly in terms of weight, fatigue resistance and freedom of shape, but has recycling disadvantages; a high-quality design is crucial.

Carbon in bicycle construction: possibilities and misunderstandings

- Regular inspection and cleaning of the handlebars, bearings and bearing seats prevents play, rust and damage, and extends their service life.
- High-quality, water-resistant grease, applied sparingly to the bearings and bearing seats, reduces friction and wear and protects against moisture.
- Correct preload, precise alignment, timely bearing replacement and professional inspection ensure precise, safe and consistently smooth steering.

Quick countersteering: Seven tips for a perfectly adjusted headset

- Regularly pull the seat post out of the seat tube, lubricate it and thus prevent seizure and possible total damage.  
- Check safety-relevant screw connections on the cockpit and seat clamp for correct tightening torque using a torque spanner.  
- Replace the handlebar tape and seal the paintwork after washing to improve the look, reduce dirt adhesion and make cleaning easier.

Safely into the cycling season: keep your bike looking like new with these tips

- Carbon frames are made from cut, resin-impregnated prepreg layers that are placed in moulds by hand, cured and finished.  
- Price and performance depend heavily on manual labour, fibre quality, manufacturing expertise and production location (Asia vs. Europe/Germany).  
- Carbon offers a very good ratio of weight, stiffness and fatigue strength, is repairable, relatively material-efficient, but recycling remains a challenge.

FAQ carbon production: 20 questions about the miracle material carbon

Frames for bikes: Test reports & recommendations ✓ Guides: Changing bike frames correctly ✓

Frames for bikes: Current test reports | BIKE

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Frames for bikes: Current test reports | BIKE

Classic fixie
Surly brings back the legendary Steamroller

Mountain bike bottom bracket standards
An overview of the utter chaos

Zéfal Universal Cage Mount
Finally space for your water bottle

Project Goliath
32-inch hardtail in the Dreambuild

32-inch steel hardtail with 11.5 kilos
Leovelo Goliath in the bike check

With Split Pivot suspension
Salsa Spearfish gets frameset upgrade & 3 new colours

At home with Specialized
A home visit to the Californian headquarters

Flexible bottle cage
Adjustable Zéfal Z Cage adapter saves space in the frame

Carbon in bicycle construction
Possibilities and misunderstandings

Quick countersteering
Seven tips for a perfectly adjusted headset

Safely into the cycling season
Keep your bike looking like new with these tips

FAQ carbon production
20 questions about the miracle material carbon

Frames for bikes: Current test reports | BIKE

Classic fixieSurly brings back the legendary Steamroller

Mountain bike bottom bracket standardsAn overview of the utter chaos

Zéfal Universal Cage MountFinally space for your water bottle

Project Goliath32-inch hardtail in the Dreambuild

32-inch steel hardtail with 11.5 kilosLeovelo Goliath in the bike check

With Split Pivot suspensionSalsa Spearfish gets frameset upgrade & 3 new colours

At home with SpecializedA home visit to the Californian headquarters

Flexible bottle cageAdjustable Zéfal Z Cage adapter saves space in the frame

Carbon in bicycle constructionPossibilities and misunderstandings

Quick countersteeringSeven tips for a perfectly adjusted headset

Safely into the cycling seasonKeep your bike looking like new with these tips

FAQ carbon production20 questions about the miracle material carbon

Classic fixie
Surly brings back the legendary Steamroller

Mountain bike bottom bracket standards
An overview of the utter chaos

Zéfal Universal Cage Mount
Finally space for your water bottle

Project Goliath
32-inch hardtail in the Dreambuild

32-inch steel hardtail with 11.5 kilos
Leovelo Goliath in the bike check

With Split Pivot suspension
Salsa Spearfish gets frameset upgrade & 3 new colours

At home with Specialized
A home visit to the Californian headquarters

Flexible bottle cage
Adjustable Zéfal Z Cage adapter saves space in the frame

Carbon in bicycle construction
Possibilities and misunderstandings

Quick countersteering
Seven tips for a perfectly adjusted headset

Safely into the cycling season
Keep your bike looking like new with these tips

FAQ carbon production
20 questions about the miracle material carbon