Special class

machine

Special class

machine

EXPLORE SÓNDERKLASSE

->

Race bike manifestation we ever wanted for mere mortal (aka non professional) that excel not only in tarmac but also cobbles and hard pack terrain


In this latest iteration, we try to put everything in the just right way from design and build quality in artisanal quality

INTENDED USE

Performance

ROAD RACE

ALL ROAD PERFORMANCE

FRAME SET START FROM
Rp 35.000.000
US$2,200

Hand build in Indonesia

50% deposit required

Custom geometry available

Custom paint available

Full bike build available

Made by order (±3 month)

MODEL AS-03

FRAME SET START FROM $2,200
Rp 35.000.000

FRAME SET START FROM $2,200
Rp 35.000.000

BUILD OPTIONS

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Metal bikes—
Revolutionize

One size, one human

Fully bespoke geometry

One size, one human

Fully bespoke geometry

Complete frame kit build

Fulesage carbon component

Complete frame kit build

Fulesage carbon component

Performance balanced ride feel

Carbon/metal tube construction

Performance balanced ride feel

Carbon/metal tube construction

3D printed cluster

Stainless steel 316L

3D printed cluster

Stainless steel 316L

Ample tyre clearance

Up to 700x40

Ample tyre clearance

700x30/45 max tire cleranance

Classic shape and craftsmanship with

flagship performance

Fusion of carbon and metal

We can't compromise the performance so we push further—XCr stainless and carbon tubing. Stainless are stiffer than Alumunium even Titanium the downside are they're slightly heavier, but with the help of carbon tubing we able to fine tune the balance the weight and comfort


Even more we obtain bigger outer diameter of carbon tubing to max out the capabilities, and they're progressively follow the bike size. So, larger frame may get bigger tubing diameter

Polybox

TUBES JOINT

REINFORCEMENT

Save watts and more powers

You can observe this Polybox tubes joint implemented in the massively wide "pyramid-shaped" cluster between bottom bracket shell-down tube-seat tube, optimize power transfer with wider support to maintain lateral stiffness of your bike


It affect the bikes behave and response to your pedaling, near instant and to propel you forward. It's also more stable especially when you of saddle and "twisting" the bikes while hammering down the pedals in the drop


This specific feature are exclusive only for Sonderklasse model that only possible with metal 3D printing

SELECTIVE LASER

MACHINED

Rapid 3D modeling and more precise frame cluster

With take serious effort to design your Sonderklasse before actual fabrication process, especially ensuring the lug and cluster in the right measurement. After we lock the 3D model from out tools, we printed them it allow us to build more accurate bike geometry—even in mili meter of thickness wall level. We try to raising the bar of the output and in the hood.


All frame cluster and junction in Sonderklasse are stainless and 3D printed, except the T47 bottom bracket shell that lathe machined from seamless 316L stainless tube

Fulesage

FRAME KIT COMPONENT

Complete package and integration

Fulesage means airplane main body, so do with Sonderklasse now comes with our carbon component. Integrated carbon bar and carbon seat post is now included with your frame and fork—with your choice of size of bar width and stem length for total fit in and out

Other upgrade kit options from Deda DCR RS, Columbus Trittico, and ENVE In-route also available

Specification

Tubing

Hi-mod 3K twill carbon front triangle, Columbus XCr stainless chain and seat stays

Frame cluster

3D printed SLM, stainless steel 316-L

Fork

Full carbon T700, ISO 4210, tapered steer tube (28,6-39,8mm), flat mount disc brakes

Integrated handlebar

Full carbon T700/T800, ISO 4210 (Integrated handlebar, seatpost, and fork)

Cable routing

Internal hidden routing, FSA ACR system, electronic groupset only (Di2, AXS, EPS compatible)

Brakes

Flat mount disc brakes, ⌀140mm rear/⌀160mm front

Seat post

round ⌀27.2mm, 15mm setback, full carbon T700/T800, ISO 4210, round and oval saddle rail compatible

Front derailleur

Alumunium 3D printed, bands-on (removable), ⌀34.9mm, 5Nm max torque

Rear dropout

UDH hanger, SRAM Transmission compatible

Bottom Bracket

T47 threaded inboard bearing, 86mm shell width

Headset bearing

IS52/IS52 (⌀51.8mm bearings)

Max tyres

up to 700x40 without fenders

Wheels OLD

Front 12x100mm, Rear 12x142mm, Thru axle

Chainring size

Up to 53-36T (2x crankset), 40T (1x crankset)

Build process

silver/brass fillet brazing, resin epoxy joint

Max weight system

±100kg total, includes the carrier and the rider

Estimated weight

±1590gr, size 510mm seat tube, frame only, unpainted

Bespoke sizing

Carbon seatpost, fork and integrated handlebar details size and geometry ->

Carbon seatpost, fork, and integrated handlebar details size and geometry ->

Sonderklasse it's bespoke frame specific model. If you need sizing references, you can refer size geometry from our other bikes model such as Eclair for road and Reiziger for more sportive endurance model

FREE CUSTOM GEOMETRY

Bike fitting in advance for more optimal custom geometry is recommended, some data measurement may required

SPECIAL OFFER FOR FULL BIKE BUILD

Just get ride, soon

We help to build your full bike too. From components, accessories and budget that fit your desired specs and riding needs from renowned brand.

Don't hesitate to contact us about your custom build details

Our curated brands ->

Our curated brands ->

Build Details

Standards in every frame without additional charge

  • Your size of Sonderklasse frame

  • 1x All road carbon fork, 700x40 max, tapered internal cable routing, fender mount

  • 1x Integrated carbon handlebar 5/25 flare options

  • 1x carbon seatpost, ⌀27.2mm, 350mm length

  • Headset and bearing (FSA ACR system)

  • 1x removable alloy front derailleur hanger ⌀34.9

  • 1x alloy seat post collar ⌀34.9

  • 2x M12 thru axle (front and rear)

  • 1x UDH™️ rear derailleur hanger

  • Rubber grommet for internal cable routing

  • 1 years fork warranty, Life time support, and 180 days Frame Crash Protection for 30% off frames repair and tubing replacement/rebuild (repaint excluded)

Minimal color paint included

+1000 RAL swatches option are ready to choose, gloss finish with black/white frame decals. Raw unpainted gloss finish exclusive for stainless build only

RAW gloss finish included

Go to RAL color library here ->

RAL gemeinnützige GmbH Germany
©All rights reserved

Choose your kit

Choose your kit

ORDER FORM

->

6 month lead time

Secure your build with 50% deposit for next batch schedule

OUR PRODUCTION CALENDAR ->

Sónderklasse fulesage kit

Frame and small parts included. Made and build in Indonesia

Frame and small parts included. Made and build in Indonesia

STEM/BAR COMBO

Carbon integrated handlebar,

5/24° flare options, compact drop

SEATPOST

Carbon seatpost 15mm setback,

round/oval saddle rail compatible

FORK

All road carbon fork Internal cable routing,

700x40 max, fender mount

Rp 38.000.000
US$ 2,495
Custom tax and shipping excluded

Rp 38.000.000
US$ 2,495
Custom tax and shipping excluded

Upgrade kit options

Contact us for inquiry
Custom tax and shipping excluded

Deda Elementi EDG DCR

  • Zero100 alloy seatpost, 0 setback

  • Alanera RS Integrated handlebar

  • EDG DCR Road 700x30 fork

Columbus Trittico Road

  • Trittico carbon seatpost, 15-25 setback

  • Trittico 2 piece stem/dropbar combo

  • Trefoil carbon fork 700x32

ENVE In-route All road Aero

  • Enve twinbolt seatpost, 15 setback

  • Aero in route stem/bar combo

  • AR In route fork 700x40

Contact us for inquiry
Custom tax and shipping excluded

Shop from Anywhere

Fulfill your cycling needs in your fingertips, free shipping available
(Only available for Indonesia markets and delivery)

5/5 Customer rating and product review

Shop from Anywhere

Fulfill your cycling needs in your fingertips, free shipping available
(Only available for Indonesia markets and delivery)

5/5 Customer rating and product review

HAND MADE ENGINEERED BIKES FOR EVERYONE. PERFORMANCE TIRE AND WHEELS

RIDE. REPEAT. NO LIMITS

All rights reserved ©2025

HAND MADE ENGINEERED BIKES FOR EVERYONE. PERFORMANCE TIRE AND WHEELS

RIDE. REPEAT. NO LIMITS

All rights reserved ©2025

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