Mondraker Summum R Mullet quasar blue 2027: a high-performance and controlled downhill mountain bike

A Mullet downhill mountain bike designed for performance

THE Mondraker Summum R Mullet quasar blue 2027 is a full-suspension downhill mountain bike built around a Summum MX 6061 Stealth Alloy Evo frame and a mullet setup combining a 29-inch front wheel with a 27.5-inch rear wheel. Its Updated Zero Suspension System offers 200 mm of rear travel, complemented by a 200 mm RockShox BoXXer Select RC 29 dual-crown fork.

The 6061 aluminum frame uses hydroformed tubes, Forward Geometry, and several adjustment options to adapt its geometry. It features a 12x157mm rear axle, a UDH derailleur hanger, an 83mm BSA bottom bracket, an ISCG 05 chain guide, and HHG internal cable routing.

This Summum R Mullet version combines a RockShox Vivid Coil Select+ shock, a 7-speed Sram GX DH drivetrain, Sram Maven Base 4-piston brakes, and wheels DT Swiss F 1900 Classic tubeless ready. The assembly is completed with tires Maxxis with a DH frame, a cockpit Onoff dedicated to downhill riding and a geometry kit including several adjustment elements.

Frame

Summum MX 6061 Stealth Alloy Evo Frame

THE Mondraker The Summum R Mullet 2027 is built on a Summum MX 6061 Stealth Alloy Evo aluminum frame. Its hydroformed tubes form the basis of this full-suspension downhill mountain bike.

Mullet configuration

The frame is designed for a Mullet configuration combining a 29-inch front wheel with a 27.5-inch rear wheel.

Updated Zero Suspension System

The Summum uses the Updated Zero Suspension System with 200 mm of rear travel. Its upper aluminum linkage incorporates bearings at the shock eyelet.

Forward Geometry

The frame adopts Forward Geometry Mondraker. This geometry is associated with several adjustment devices allowing certain parameters of the bicycle to be modified.

MAX capacity double row bearings

The frame joints use double-row MAX capacity bearings.

Framework standards

The frame features a 12x157mm rear axle, a UDH derailleur hanger, and an 83mm BSA bottom bracket. It also has an ISCG 05 mount for the chain guide.

Internal routing of HHG cables

The internal routing of the HHG cables limits visible cables and contributes to the overall integration of the assembly.

Available sizes

• Size M
• Size L
• Size XL

Rear suspension

RockShox Vivid Coil Select+

The RockShox Vivid Coil Select+ rear shock has dimensions of 225x75 mm. It uses a coil spring with preload adjustment.

Trunnion Mount

The shock absorber uses a Trunnion top mount and 30x8 mm bottom bushings.

Shock absorber settings

• Rebound: R55
• Compression: C40

Spring tensioning according to size

• Size M: 450 lbs
• Size L: 500 lbs
• Size XL: 550 lbs

Fork

RockShox BoXXer Select RC 29 200mm

The RockShox BoXXer Select RC 29 fork offers 200mm of travel. Its dual-crown design is paired with a DebonAir+ air spring.

Fork settings

The RockShox BoXXer allows you to adjust low-speed compression, rebound, and air preload.

Boost axle 20x110 mm

The fork features a straight 1-1/8" steerer tube, a Boost 20x110mm front axle and a 52mm offset.

Steering game

Onoff DH ARS

The game of direction Onoff DH ARS uses the Adjustable Reach System. It is designed for a 1-1/8" head tube and fork steerer.

Reach adjustment

The supplied cups allow the reach to be modified by plus or minus 5 mm.

Sealed bearings

The headset uses sealed bearings of 42x30x7x45ºx45º.

Cockpit

Integrated stem Onoff S9 DH CNC

The gallows Onoff The S9 DH CNC Integrated mount attaches directly to the upper triple clamp of the fork. It is made of 7075 aluminum and is entirely CNC machined.

Adjustable length

The stem length can be adjusted between 45 and 50 mm. It has a 10 mm rise and a 31.8 mm clamping diameter.

Daggerboard spacers

The assembly includes four 5mm spacers.

Hanger Onoff S6 1.5

The hanger Onoff The S6 1.5 is made of 7050 aluminum. It measures 800 mm wide and features a rise of 35 mm, a backsweep of 8º, an upsweep of 5º and a diameter of 31.8 mm.

Handles Onoff Desert Pro

The handles Onoff Desert Pro uses a CNC lock-on system and measures 135 mm. Sizes L and XL receive a thicker version.

Seatpost and saddle

Seat post Onoff S3 DH Alloy

The seat post Onoff S3 DH Alloy has a diameter of 31.6 mm and a length of 300 mm.

Saddle Ergon SM10 DH

The assembly is completed by a saddle. Ergon SM10 DH in black.

Transmission

Sram GX DH 7-speed

The drivetrain is based on a Sram GX DH 7-speed rear derailleur with a medium cage.

Sram Trigger GX DH remote

The derailleur is controlled by a 7-speed Sram Trigger GX DH lever using an X-Actuation 1:1 ratio.

Sram PG-720 cassette 11-25 teeth

The Sram PG-720 cassette offers a range of 11-25 teeth over 7 speeds.

Sram Truvativ Descendant DH crankset

The Sram Truvativ Descendant DH crankset uses a DUB axle and a direct mount chainring. The crank arms are 165 mm long and the chainline is 56.5 mm.

36-tooth X-SYNC chainring

The 36-tooth chainring is made of aluminum and uses X-SYNC technology.

Sram PC1110 chain

The Sram PC1110 11-speed chain uses a PowerLock link.

Sram DUB BSA bottom bracket

The Sram DUB BSA bottom bracket has a width of 83 mm and uses sealed bearings.

Sram UDH derailleur hanger

The rear derailleur is mounted on a Sram UDH hanger.

Chain guide and chainring guard

E.13 LG1+ Compact

The assembly includes an E.13 LG1+ Compact chain guide with aluminum backplate.

Adjustable upper guide

The upper guide is adjustable and uses an ISCG 05 fitting.

DMB lower protection

The system incorporates a lower guide with DMB Direct Mount Bashguard chainring protection, compatible with chainrings from 36 to 38 teeth.

Brakes

Sram Maven Base 4-piston brakes

Front and rear braking is provided by Sram Maven Base brakes equipped with 18mm 4-piston calipers.

Centerline 220 mm front disc

The front brake uses a 220mm monobloc Centerline disc with 6-hole IS mounting.

Centerline 200 mm rear disc

The rear brake features a 200mm monobloc Centerline disc with 6-hole IS mounting.

Organic platelets

The calipers use organic pads with steel backing.

Sram Maven Base Levers

Sram Maven Base levers use DirectLink technology, bushings at their pivot point and tool-free reach adjustment.

Wheels

DT Swiss F 1900 Classic

The Summum R Mullet receives wheels DT Swiss The F 1900 Classic wheels feature welded aluminum rims. They have an internal width of 30 mm and are tubeless ready.

Number of differentiated rays

• Front wheel: 28 spokes
• Rear wheel: 32 spokes

DT Competition spokes

The wheels use DT J-bend DT Competition spokes in black.

Front hub DT Swiss 370

The front hub DT Swiss 370 adopts a Boost 20x110 mm bolt pattern and a 6-hole IS disc mount.

Rear hub DT Swiss 370 Classic

The rear hub DT Swiss The 370 Classic uses an 18-tooth Ratchet LN system, a 12x157 mm axle, and a 6-bolt IS disc mount. It is fitted with an HG freehub body.

Tires

Maxxis Assegai 29x2.5WT front

The front tire Maxxis The Assegai 29x2.5WT uses a 3C Maxx Grip compound, a 60x2 TPI DH casing, and a folding bead. It is tubeless ready.

Maxxis Minion DHR II 27.5x2.5 WT at the rear

The rear tire Maxxis Minion DHR II 27.5x2.5 The WT features a 3C MaxxTerra compound, a 60x2 TPI DH casing, and a folding bead. It is also tubeless ready.

Differentiated Mullet Mount

The assembly combines a Maxxis 29-inch Assegai wheels at the front and a Maxxis Minion DHR II 27.5 inch at the rear.

Geometry kit

Included items

THE Mondraker The Summum R Mullet comes with a geometry kit that allows you to adjust several frame parameters.

• Headset cups: reach adjustment of plus or minus 5 mm
• Flip chip on the lower shock absorber mounting point
• Rear foot with +5 mm adjustment
• Rear foot with -5 mm adjustment

Technical specifications

Frame

• Model: Summum MX 6061 Stealth Alloy Evo
• Material: 6061 aluminum
• Tubes: hydroformed
• Configuration: Mullet
• Suspension system: Updated Zero Suspension System
• Rear travel: 200 mm
• Geometry: Forward Geometry
• Upper link: aluminum with bearings at the shock absorber eyelet
• Rear axle: 12x157 mm
• Derailleur hanger: UDH
• Bottom bracket: BSA 83 mm
• Bearings: MAX capacity double row
• Cable routing: internal HHG
• Chain guide attachment: ISCG 05

Sizes

• Size M
• Size L
• Size XL

Suspensions

• Shock absorber: RockShox Vivid Coil Select+
• Shock absorber dimensions: 225x75 mm
• Adjustment: spring preload
• Top mounting: Trunnion
• Lower rings: 30x8 mm
• Rebound: R55
• Compression: C40
• Medium spring: 450 lbs
• Large spring: 500 lbs
• XL size spring: 550 lbs
• Fork: RockShox BoXXer Select RC 29
• Front suspension travel: 200 mm
• Spring: DebonAir+
• Pivot: 1-1/8"
• Front axle: Boost 20x110 mm
• Offset: 52 mm
• Fork settings: low-speed compression, rebound, and air preload

Transmission

• Crankset: Sram Truvativ Descendant DH
• Axis: DUB
• Crank arm length: 165 mm
• Plate mounting: direct mount
• Chain line: 56.5 mm
• Chainring: 36 teeth, aluminum, X-SYNC
• Bottom bracket: Sram DUB BSA, sealed bearings, 83 mm
• Chain: Sram PC1110, 11-speed, PowerLock
• Rear derailleur: Sram GX DH, 7-speed, medium cage
• Shifter: Sram Trigger GX DH, 7-speed, X-Actuation 1:1
• Cassette: Sram PG-720, 11-25 teeth, 7 speeds
• Derailleur hanger: Sram UDH
• Chain guide: E.13 LG1+ Compact
• Chain guide rear plate: aluminum
• Lower protection: DMB Direct Mount Bashguard
• Guard compatibility: 36 to 38 tooth chainrings
• Mounting: ISCG 05

Braking

• Front brake: Sram Maven Base, 4-piston 18mm caliper
• Rear brake: Sram Maven Base, 4-piston 18mm caliper
• Front disc: Centerline 220 mm monobloc
• Rear disc: Centerline 200 mm monobloc
• Disc mounting: IS 6 holes
• Brake pads: organic with steel backing
• Levers: Sram Maven Base
• Lever technology: DirectLink
• Guard adjustment: tool-free
• Lever pivots: with bushings

Wheels and tires

• Wheels: DT Swiss F 1900 Classic
• Rim material: welded aluminum
• Internal width: 30 mm
• Compatibility: tubeless ready
• Number of front spokes: 28
• Number of rear spokes: 32
• Spokes: DT J-bend DT Competition, black
• Front hub: DT Swiss 370, Boost 20x110 mm, IS 6 holes
• Rear hub: DT Swiss 370 Classic, Ratchet LN 18 teeth, axle 12x157 mm, IS 6 holes
• Freewheel body: HG
• Front tire: Maxxis Assegai 29x2.5WT, tubeless ready, 3C Maxx Grip compound, DH casing, 60x2 TPI, folding bead
• Rear tire: Maxxis Minion DHR II 27.5x2.5 WT, tubeless ready, 3C MaxxTerra rubber, DH casing, 60x2 TPI, flexible bead

Cockpit and components

• Steering system: Onoff DH ARS Adjustable Reach System
• Head tube and steerer tube: 1-1/8"
• Bearings: sealed, 42x30x7x45ºx45º
• Reach adjustment cups: plus or minus 5 mm
• Gallows: Onoff S9 DH CNC Integrated
• Stem length: adjustable from 45 to 50 mm
• Stem rise: 10 mm
• Stem material: 7075 aluminum
• Clamping diameter: 31.8 mm
• Spacers: 4x5 mm
• Hanger: Onoff S6 1.5, 7050 aluminum, 35 mm rise, 800 mm width, 8º backsweep, 5º upsweep, 31.8 mm diameter
• Handles: Onoff Desert Pro, lock-on CNC, 135mm
• Handles sizes L and XL: thicker version
• Seat post: Onoff S3 DH Alloy, diameter 31.6 mm, length 300 mm
• Saddle: Ergon SM10 DH Black

Geometry kit included

• Headset cups: plus or minus 5 mm
• Flip chip on the lower shock absorber mount
• Rear leg: +5 mm
• Rear leg: -5 mm

Recommended use

• Descent
• Bike park
• Mullet Full Suspension Mountain Bike
• Course requiring 200 mm of front and rear travel
• Riders looking for a 29-inch front wheel and a 27.5-inch rear wheel
• Riders looking for a Sram GX DH 7-speed drivetrain
• Users wishing to adjust the geometry of the bicycle
• Terrain requiring DH casing tires

Why choose the Mondraker Summum R Mullet 2027 ?

• Full-suspension downhill mountain bike in mullet configuration
• Summum MX 6061 Stealth Alloy Evo Frame
• Hydroformed tubes
• Updated Zero Suspension System with 200 mm rear travel
• Forward Geometry
• RockShox Vivid Coil Select+ shock
• Spring tension adapted to each size
• RockShox BoXXer Select RC 29 200mm fork
• DebonAir+ air spring
• Steering game Onoff ARS DH with adjustable reach of plus or minus 5 mm
• Geometry kit with flip chip and rear adjustment tabs
• Sram GX DH 7-speed drivetrain
• Sram PG-720 11-25 tooth cassette
• Sram Truvativ Descendant DH 165mm crankset
• E.13 LG1+ Compact chain guide with DMB protection
• Sram Maven Base 4-piston brakes
• 220 mm Centerline front disc and 200 mm rear disc
• Wheels DT Swiss F 1900 Classic tubeless ready
• Rear hub DT Swiss 370 Classic with Ratchet LN 18-tooth system
• Front tire Maxxis Assegai 29x2.5WT with 3C Maxx Grip rubber and DH casing
• Rear tire Maxxis Minion DHR II 27.5x2.5 WT with 3C MaxxTerra rubber and DH casing
• Integrated stem Onoff S9 DH CNC adjustable
• Hanger Onoff S6 1.5 of 800 mm
• Boost front axle 20x110 mm and rear axle 12x157 mm
• UDH compatibility

Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.