MAGMA DH

The Magma DH, our downhill model. Your best partner on the slopes!

– Framset or Custom Build : From 2699,00 €

(2249,00€ Tax excluded)

– Complete Bikes :

RideReady edition : 4999,90 €

(4166,60€ Tax excluded)

Ultimate edition : 6699,90 €

(5583,25€ Tax excluded)
Details of the complete bikes : See below
Special launch price limited for the first 20 orders 
Prices are shown with EU VAT included

The Vulcain Offer

Avec votre cadre Magma DH, vous êtes assuré d’avoir un vélo unique, qui vous ressemble, qui vous est réellement adapté, et fait pour durer longtemps :

Bespoke Geometry

Crucial point for an adapted bike, the geometry of your frame is defined according to your riding style, your dimensions, and the ideal behaviour you are looking for.

Custom Finish

With Vulcain, your bike will be unique. We offer a wide choice from our catalogues, or from our partners, with a total of almost 6500 shades available.

Choose your Build

We offer the Magma DH as a frameset only, as a complete bike with 2 setups available, and as a custom build on quotation, with a total choice of components.

Built to last

Our high-grade Steels allow the Magma DH to be extremely durable and resistant to all types of impacts, thanks to their mechanical strength and ductility.

Description

A bike designed to go fast and far!

With its high strength steel tubes, 200mm of travel, and a progressive and sensitive 4-bar linkage kinematics, here is our downhill frame, solid, fun and efficient.

Get on the chairlift or go up in the shuttle, to the top of the slopes. Always ready for a good dose of adrenaline, the Magma DH will go down without worrying about rocks and roots.

Efficient and nervous when you need it, tolerant when you’re on the edge of a riding mistake. All this with incredible durability, staying dynamic even after many years of riding.

Features

Made with high-end materials and manufactured using advanced technologies :

  • Front triangle made of Reynolds 921 stainless steel tube. Swingarm and seatstays in Reynolds 853 steel tube.
  • Rear parts and reinforcements machined in 15CDV6 steel, the reference steel in motorsport and aeronautics.
  • 3D metal printing (DLMS technology) of the swingarm connections, in Maraging 300 steel, aeronautical quality.
  • Rocker and suspension mountings in 7075-T6 aluminum, aeronautical quality, anodized.
  • Suspension pivot screws in 7075-T6 Aluminum, anodized. Shock axles in high performance stainless steel.
  • High quality reinforced “Enduro Bearing” MAX bearings, for increased durability and reliability.
  • Anti-corrosion zinc plating treatment of the rear parts, for total protection, even in case of impact and paint chips.

Specs

– Naked frame weight: 4.2 kg (all screws included, model with a reach of 450mm)

– Wheels size : 27,5” or 29”F/27,5″R

– Rear hub size 12x150mm

– Rear travel : 200mm

– Rear shock size metric or imperial available (9″x3.5″ ou 250x75mm)

– Headtube Ø44mm (Compatible headset : ZS44)

– Bottom bracket BSA 83mm / ISCG05 mounting

– Seatpost Ø31.6mm / clamp Ø34.9mm

– External hoses (for an easier maintenance)

Geometry

At Vulcain, the frames are adapted for each rider, so the geometry is made to measure. For the proper functioning of the bike and to obtain the same behavior for each frame, the dimensions of the rear parts are locked. You will find all dimensions below :

  • Length [Reach] : Made to measure
  • Length [Stack] : Made to measure
  • Headtube angle : 63.5°
  • Theorical seattube angle : 74°
  • Real seattube angle : 68°
  • Seattube length [HST] : Made to measure
  • Fork height [HF] : Made to measure (depends of the wheel size)
  • Headtube height [HDD] : Made to measure
  • TopTube length [LTT] : Made to measure
  • Chainstays length [LB] : 438mm
  • Wheelbase [EMP] : Made to measure
  • BB Drop [BBd] : -5mm

Kinematic

The Magma DH has been designed to be efficient and powerful with a ” 4-bar linkage ” kinematics, creating a deformable parallelogram, with a virtual pivot point . This system makes it possible to combine and optimize many suspension parameters thanks to the great freedom of trajectory of the rear wheel.

Kinematic ratios

The kinematics ratios tell us the evolution of the suspension. That of the Magma DH is progressive. Throughout the travel, the rear wheel transfers less and less force to the shock absorber. This results in a higher sensitivity at the beginning of the travel and more firmness at the end to avoid bottoming out and to keep control on big landings. 

Anti-squat and Anti-rise

The anti-squat is the evolution of the action of the pedaling on the suspension. At the SAG level, it is 110%, allowing powerful acceleration without pumping effect. The anti-rise is the evolution of the braking action on the suspension. Between 55% and 65%, these values are ideal and ensure a stable and efficient bike during heavy braking or in very damaged areas.

Rear wheel trajectory

Moving back at the beginning of the travel, the trajectory of the rear wheel allows to gain in sensitivity and speed in the technical zones and gives a good nervousness to the bike. On the second part of the travel, the direction of the trajectory is reversed, forcing the bike to slow down, and to be stabilized on big landing of jumps for example.

Complete Bikes

See below the details of the components for the complete bikes available:

  • Magma DH RideReady edition
  • Magma DH Ultimate edition
Rear ShockROCKSHOX Deluxe ultimate coil DH - Grey spring (rate at your choice)
ForkFORMULA Nero C - Black (spring model at your choice)
HeadsetReverse Twister 1 1/8" ZS44 - Black
Headset spacersREVERSE ultra-light alu kit - Black
StemREVERSE Fast Line DM 50mm Ø31,8mm - Matte Black
HandleBarREVERSE Base Ø31,8mm - Rise 18mm - Black
GripsREVERSE Classic Ø29mm  - Black
SeatpostREVERSE Comp Ø31,6mm - Black
SaddleREVERSE Fort will crmo  - Black
Seatpost clampREVERSE Bolt Ø34,9mm  - Black
CranksetTRUVATIV descendant DH - 165mm - 34 teeths
Bottom bracketSRAM DUB BSA 83mm
Chain guideREVERSE X11-EVO (ISCG05)
ChainSRAM PC1130 - 114 links
CassetteSRAM GX DH 7V
Rear DerailleurSRAM GX DH 7V
ShifterSRAM GX DH 7V
BrakesFORMULA Cura - Polish
RotorsFORMULA  Ø203mm std 6 holes
WheelsREVERSE Base DH 12x150 7V / 20x110 - Black & White
Tires Maxxis Minion DHF 27,5x2,50" + DHR² 27,5x2,40" (with inner tubes)
Hoses and cablesKBLE inox - Black
Rear ShockCANECREEK Double Barrel coil - Black spring (rate at your choice)
ForkFORMULA Nero R - black (spring model at your choice)
HeadsetCANECREEK Forty 1"1/8 ZS44 - Black
Headset spacersREVERSE ultra-light alu kit - Black
StemREVERSE Black Line - Black
HandleBarREVERSE Nico Vink serie Ø31,8mm - Rise 18mm - Black
GripsREVERSE Classic Ø29mm  - Black
SeatpostREVERSE NicoVink serie Ø31,6mm - Black
SaddleREVERSE Fort will crmo  - Black
Seatpost clampREVERSE Bolt Ø34,9mm  - Black
CranksetTRUVATIV descendant DH - 165mm - 34 teeths
Bottom bracketSRAM DUB BSA 83mm
Chain guideREVERSE X11-EVO (ISCG05)
ChainSRAM PC1130 114 links
CassetteSRAM GX DH 7V
Rear DerailleurSRAM X01 DH 7V
ShifterSRAM X01 DH 7V
BrakesFORMULA  Cura 4 - Polish
RotorsFORMULA  Ø203mm std 6 holes
WheelsFORMULA  Linea G
TiresMICHELIN DH22 ou DH34 at your choice (with inner tubes)
Hoses and cablesKBLE inox - (color at your choice)

COVID-19 info: Supply difficulties due to the health crisis could lead to changes in some components without prior notice, in order to ensure the availability of the bikes.

Tests – Presses

" Dans les parties techniques et rocailleuses de la piste, c’est là que le Vulcain révèle sa vraie nature ! On peut facilement s’envoyer en bunny-up pour éviter un rocher ou alléger le vélo au dernier moment tant le contrôle du cadre est agréable. "
" Rares sont les vélos descente artisanaux et sur mesure [...] La démarche est belle. Au moins autant que le résultat [...] La ductilité de l'acier, un gage de stabilité et de durabilité. "
Vélo Vert magazine
#340 - Mars 2021
" Un cadre 100% made in France, en Auvergne. Respect de l'environnement et du tissu économique français, gestion des process et de la qualité, réalisation du sur mesure... Vulcain coche toutes les bonnes cases. "
" The thing that first drew our attention to this bike was the fact that it wasn't simply another cookie-cutter steel single pivot that you see in a lot of steel bikes "