RAW SLX £3,795.00

Size

Colour

  1. Vela
  2. SensorBlue
  3. FilterYellow

RAW SLX

“The RAW is a bike I’ve been looking forward to for a long time. It fills the MTB sized gap in the Mason range and it doesn’t disappoint. It flies down the hills when fully loaded and I found myself sending it off drops in the trail even with my bike packing gear attached. It's beautifully balanced and far more capable off-road then my skills allow! The ride is super smooth and was really comfortable over the savage terrain of the HT550.”

- Josh Ibbett

Our #RideDrivenDesign development process is crucial to what we do at MASON, and this was never more true than with the RAW. These words from our supported rider Josh Ibbett were his reflection on a RAW prototype after putting it through its paces on the HT550 in May 2021. This event represented a key stage in the formation of the finished RAW product, and in assuring us the bike could perform at the highest level.

Along with supported riders, the team at MASON worked closely with our highly experienced frame builders and Italian & UK tube and component suppliers. This includes our fabrication and finish partners Five Land Bikes, who are renowned in the UK frame building industry and we’re proud to say they are responsible for truly astonishing quality of work, including their role in every RAW frame.

The Shimano SLX M7100 12-speed groupset is a strong option for the RAW, which packs versatility, durability and benefits from a lot of Shimano trickle-down technology.

To complement the SLX groupset, we have gone with the Rockshox SID Ultimate fork. Well balanced to cater for XC riding with 120mm travel and a 44mm offset, the fork is packed in a stiff, lightweight 35mm chassis, and is equipped with the top of the line Charger Race Day damper and bolt on arch mounted mudguard.

Finishing off the build, the Hunt Trailwide V2 wheelset provides optimal toughness and ride quality.

Features

  • Full European construction, tubing and components, including custom shaped and formed Dedacciai Zero/Zero Uno as well as Reynolds UK seattube and a ring-reinforced, internally machined 631 head tube.
  • WTB ranger 29x2.4” tyres (options available).
  • CNC machined brake mount and dropouts, developed in conjunction with our Italian manufacturing partners.
  • 73mm stainless BSA threaded bottom bracket shell.
  • Fabrication and wet-painting by Scottish-based Five Land Bikes, as well as eCoat corrosion treatment inside and out.
  • Clearance for 29 x 2.6” tyres and 34 tooth chainring.
  • Provisions for bolt-on top tube bag and ample full frame bag space with with opened-out front triangle.
  • 15 discrete integrated bottle/bag/accessory mounts, including semi-custom options such as male threaded / standard bottle bosses or top tube pack mounting points.
  • Eyebolts can be fitted for rack mounting on dropouts, or removed and replaced with a stainless grub screw for a clean aesthetic.
  • Xfusion Manic 31.6 dropper post (length as per customer request).
  • Fizik Terra Argo X5 saddle.
  • Rockshox SID Ultimate fork, with 120mm travel and 44mm offset.
  • Full SLX M7100 drivetrain (chainring/cassette size as per customer request).
  • SLX M7100 brakes.
  • 29” Hunt Trailwide V2 Wheelset.
  • Pro Koryak handlebar.
  • Deda EC/ZS44mm sealed bearing headset.
  • Pro Trail lock on grips.
  • Pro Koryak stem (Length as per customer request).
  • For use with longer travel dropper posts on the smaller sizes, male threaded bottle bosses can be specified allowing for an uninterrupted seat tube and as much seatpost insertion as possible.
  • Premium quality ‘black stainless’ bolt and fittings set.
  • Stealth routed dropper and internal cable/hose routing.
  • MASON ‘Element’ 3D printed TPU chainstay protector.

Details

Images may not exactly represent final bike build. See ‘Specifications’ for full listing.

Technical info

Select size
 

Dimensions
(sagged, mm unless specified)
A > SEAT TUBE C/T 395
B > SEAT TUBE C/C 355
C > BB DROP 60
D > REAR CENTRE 435
E > TT EFFECTIVE 577.7
F > TT ACTUAL 565.5
G > STACK 610.3
H > REACH 426
I > S/O - 29 x 2.6
(Measured vertically, 50mm in front of BB centre)
735
J > OFFSET 45
K > TRAIL
Trail data for more wheel/tyres in full geo. chart (where applicable)
118.6
L > FORK CROWN HEIGHT 530
M > HEAD ANGLE 66
N > HEAD TUBE LENGTH 100
O > VIRTUAL ST ANGLE
(BB Centre to Centre of post Clamp at seat height shown)
75.2/690
P > WHEELBASE 1151.2
Q > HANDLEBAR (OUTSIDE DIMENSION) 80p
Dimensions
(sagged, mm unless specified)
A > SEAT TUBE C/T 430
B > SEAT TUBE C/C 380
C > BB DROP 60
D > REAR CENTRE 435
E > TT EFFECTIVE 606
F > TT ACTUAL 588.4
G > STACK 619.4
H > REACH 451.2
I > S/O - 29 x 2.6
(Measured vertically, 50mm in front of BB centre)
758
J > OFFSET 45
K > TRAIL
Trail data for more wheel/tyres in full geo. chart (where applicable)
118.6
L > FORK CROWN HEIGHT 530
M > HEAD ANGLE 66
N > HEAD TUBE LENGTH 110
O > VIRTUAL ST ANGLE
(BB Centre to Centre of post Clamp at seat height shown)
75.12/745
P > WHEELBASE 1180.3
Q > HANDLEBAR (OUTSIDE DIMENSION) 80p
Dimensions
(sagged, mm unless specified)
A > SEAT TUBE C/T 470
B > SEAT TUBE C/C 420
C > BB DROP 60
D > REAR CENTRE 435
E > TT EFFECTIVE 628.4
F > TT ACTUAL 606.6
G > STACK 628.5
H > REACH 471
I > S/O - 29 x 2.6
(Measured vertically, 50mm in front of BB centre)
790
J > OFFSET 45
K > TRAIL
Trail data for more wheel/tyres in full geo. chart (where applicable)
118.6
L > FORK CROWN HEIGHT 530
M > HEAD ANGLE 66
N > HEAD TUBE LENGTH 120
O > VIRTUAL ST ANGLE
(BB Centre to Centre of post Clamp at seat height shown)
75.11/780
P > WHEELBASE 1204.3
Q > HANDLEBAR (OUTSIDE DIMENSION) 800
Dimensions
(sagged, mm unless specified)
A > SEAT TUBE C/T 505
B > SEAT TUBE C/C 445
C > BB DROP 60
D > REAR CENTRE 435
E > TT EFFECTIVE 654
F > TT ACTUAL 630.4
G > STACK 637.7
H > REACH 494.3
I > S/O - 29 x 2.6
(Measured vertically, 50mm in front of BB centre)
820
J > OFFSET 45
K > TRAIL
Trail data for more wheel/tyres in full geo. chart (where applicable)
118.6
L > FORK CROWN HEIGHT 530
M > HEAD ANGLE 66
N > HEAD TUBE LENGTH 130
O > VIRTUAL ST ANGLE
(BB Centre to Centre of post Clamp at seat height shown)
75.37/800
P > WHEELBASE 1231.6
Q > HANDLEBAR (OUTSIDE DIMENSION) 800

This page gives you some guidelines based on rider height, but these are only a starting point for a proper bike fitting. There are of course many other factors to consider when choosing the right size for you and sizing advice will vary depending on your choice of model from the Mason range and the way that you intend to ride it. We're always here to help of course and would always recommend a professional bike fitting and visiting us for a ride on the Mason Cycles riverside gravel/country lanes test-loop if you can. There is further advice, based on specific models, below the height chart.

Sizing chart

Fitting a bike to a rider is an important process, this information is a start to the process but it’s not really possible to give 100% accurate fitting instructions online.

Humans are odd shapes, each person’s physical dimensions: arm, torso, femur length, level of flexibility, skill level and intended model usage are very different. This means that there will invariably be different frame size requirements, even for people of the same height and inseam.

SIZING ADVICE BASED ON MASON MODELS

ROAD, ALL-ROAD & GRAVEL - Aspect | Resolution | Definition | SLR | BokehTi | Bokeh | Exposure: Size range is 48cm to 62cm depending on specific model. The chart dimensions show the extremes of useable frame size based on height and the rider size range is very similar for all our frames with 6 or 8 standard sizes.

ULTIMATE ADVENTURE - InSearchOf: Size range is 42cm to 58cm [5 sizes]. As a start point, we would recommend selecting one size down from your normal 'road' frame size. For example, if you would normally ride a 54cm then a 50cm InSearchOf is probably best for you.

MTB, TRAIL/TRAVEL - RAW: Size range is Sml to XL [4 sizes]. With the advent of modern, more progressive mountain bike geometry, the sizing process is even more fluid. The Mason RAW is no different: seat tube lengths are kept deliberately low so riders have a certain amount of flexibility in choosing size based on their preferred reach, wheelbase, handling characteristics and intended use. For instance, for high speed and loaded up stability you may prefer a larger frame that will also provide more pack space in the front triangle. Or, if you are spending most of your time on twisty woodland singletrack, you’d benefit from the shorter wheelbase and extra response of the smaller frame.

We are experienced in sizing and geometry, so of course we will be on the end of the phone or email to help and advise, but we would always recommend having a proper bike fit done before committing, especially if you feel like you may be between sizes. If you do fall between our frame sizes, it’s probably best to go with the smaller size. It’s easier to make a smaller frame fit a little larger than vice versa.

CONFIGURATION: With all models, you can use our drop down menus to configure your finishing kit to suit your needs, including which brake lever operates front/rear wheel and for MTB we’re happy to cut down the handlebar to your desired width.

Please email us here or call 01273 463000 if you have further requirements that you would like to discuss, we are always happy to help.

 

CUSTOM TUBESET RAW

For the RAW every tube has a custom profile, section or bend to work exactly how we want it for ride quality, clearance and durability.

DFORM DOWN TUBE

We worked with Dedacciai to design and tool for the exclusive Mason ‘DForm’ down tube for the RAW frame. The special 'D-Section' shape where it meets the BB gives a flat wide weld for maximum stability at the pedalling platform and avoids excessive tube overlap onto the seat tube which can lead to fatigue failure.

UP TO 4X BOTTLE / ACCESSORY MOUNTS

The RAW is designed to travel, so all Raw framesets have a full compliment of bottle and accessory mounts. We do not reduce the number of mounting points with smaller frames.

The frame has 4 x bottle/accessory mounts. All sizes have an extra boss on the down tube which allows greater adjustability to make space for an extra bottle on the seat tube or a larger frame-bag under the top tube. 

Top tube pack mounting points are standard with the option to order without if not required.

HIDDEN RACK MOUNTS

Our custom designed CNC’d steel dropouts contain discrete mounting points for rear racks. Eyebolts can be fitted for rack mounting or removed and replaced with a stainless grub screw for a clean aesthetic. 

Note: Insert Eyebolt fully into dropout threaded hole by hand and use locknut to secure the bolt in the correct position for rack fitting, by tightening it against the dropout face. 

Recommended locknut torque: 5Nm

Max Rack Loading: 20kg

44MM HEADSET

A straight 44mm internal diameter head tube uses the EC44/ZS44 press fit headset standard which allows compatibility with all current fork steerer tube standards as well as angle adjust headsets.

44mm RING-REINFORCED HEAD TUBES

This frameset features a UK made Reynolds 631 head tube, CNC-machined by BEAR Frame Supplies.

The large overall diameter provides a useful weld area, with ‘Ring-Reinforcement’ top and bottom for strength and tapering down in the middle to reduce weight.

DROPPER-READY

A dropper is great for getting the saddle out of the way for steeper, rougher and more technical riding, especially with a loaded up bike.

The 31.6 post size allows the use of most modern dropper-posts. The seat tube has internal ‘stealth’ routing which can be blanked-off when not in use.

CUSTOM MASON X DEDACCIAI TUBING

Almost the entire tubeset was developed in conjunction with Italian tube gurus Dedacciai, using their new 'ZERO/ZERO UNO', fine grain, micro-alloyed, progressive butted steel tubing. We work very closely with them to develop our model-specific Alu, Ti and steel tubesets for Bokeh, BokehTi, Definition, ISO, RAW, Exposure and SLR. Read more about the tubing design in THINKING.

Internal Routing

The cables, hoses and electronic shift control wires run through the frame tubes, guided by our Mason 'MultiPort' adaptable inserts. Interchangeable Internal routing keeps the control cabling away from road dirt and grime, helps avoid accidental damage, makes cleaning easy, de-clutters your bike and means you can adapt your bike easily to work with various shifting and braking methods. For adventure and endurance riding, internal routing also has the advantage that it is easy to strap frame packs to the frame tubes without being hindered by external cabling and hoses.

REYNOLDS RAW SEAT TUBE

A high quality Reynolds seat tube, custom shaped to provide the right balance of tyre clearance and chainstay length. Ø31.6 internally to be compatible with all popular dropper posts and our own Penta carbon seatposts. Exclusive Mason Macro Ø34.9mm seatclamp tops it off. Seat tube also has internal routing for stealth dropper post.

120MM SUSPENSION FORK

The RAW is designed around a 120mm suspension fork with a static axle to crown height of 531mm and an offset of 44mm. This is the ideal amount of fork travel to keep geometry changes in check throughout the stroke and allow traversal of the chunkiest terrain when combined with large volume 29” wheels and tyres.

INBOARD DISC-MOUNT

The caliper is mounted to our custom, CNC’d post mount bridge that sits between the chain and seat stays. This allows us to use lighter seat-stays and maximizes the tubular chainstay for maximum compliance. Native brake rotor size is 160mm, or 180mm with an adapter.

OPTIONAL MALE THREADED BOTTLE BOSSES ON SEAT TUBE

For use with longer travel dropper posts on the smaller sizes, male threaded bosses can be specified allowing uninterrupted seat tube for as much seatpost insertion as possible. Fitted with 8mm, Black Stainless, locking Flange nuts.

31.6 SEAT POST

The Reynolds seat tube is Ø31.6 internally to be compatible with all popular dropper posts and our own Penta carbon seatposts.

BOOST SPACING

148 x 12 at the rear for compatibility with modern MTB wheels. Boost spacing allows us to optimise frame clearance and stability and run large rim widths and big volume tyres.

1X DRIVETRAIN SPECIFIC

Designed specifically around the latest 12 speed mountain bike drivetrains allowing for greater tyre clearance, chain security and performance in muddy conditions. Ultra wide gearing options provide ample range for any terrain.

29ER

The RAW is designed for 29” MTB wheels and tyres up to 2.6”, meaning this bike can be ridden over an extremely wide range of terrain. Recommended tyre sizes: 29 x 2.3” - 29 x 2.6”.

3D PRINTED CHAINSTAY PROTECTOR

Custom designed and 3D printed in Europe from thermoplastic polyurethane (TPU). This flexible, rubber like material utilises the latest 3D printing technology to minimise chain slap noise and prevent the paint on the chainstay from getting chipped.

 

THREADED BB

The RAW frames use high quality stainless steel 73mm, BSA, threaded bottom bracket shells. This gives greater durability and creak-free reliability over many miles. The threaded BB is easier to service using standard tools and you are more likely to find a replacement when adventuring far from home. A properly lubricated, threaded BB is also an ideal interface with a metal BB shell.

ESSENTIAL DIMENSIONS: RAW

BRAKING

Rotor Size: The rear rotor diameter will be 160mm with the calliper mounted directly to the brake mount. An adapter can be used for a 180mm rear rotor maximum.

Caliper Type: This frame is designed for Post-Mount calipers.

We always recommend using genuine brake mounting hardware and consulting us directly using the 'Technical' dropdown, or using a qualified cycle mechanic if in doubt.

 

WHEELS + AXLE SPACING

The RAW is designed around the 'BOOST' 148mm hub standard, allowing wider wheels and high volume tyres with larger clearances front and rear. The wider hub flanges result in a stiffer wheel, giving enhanced bike handling and shorter/wider stays allow progressive geometry, whilst a wider rear hub helps give a greater choice of chainrings.

Axle length/pitch: 172x12mm x 1.5tpi axle with 2mm spacer.

 

TYRE SIZES

All frame sizes are designed for and tested with up to 29x2.6” tyres.

The below are guides only. Fitted width may vary depending on tyre manufacturer and rim width. Please check true fitted dimensions of chosen components to be sure.

Max tyre size: 29" x 2.6"

Min tyre size: 29" x 2.3”

 

SEAT POST

31.6mm internally routed for dropper post cable routing.

 

SEAT CLAMP

34.9mm

 

BB TYPE

73mm shell width. BSA threaded.

 

CHAINRING FIT

1x Cranksets: SRAM - Use 3mm or 0mm offset chainring. Shimano - Use 52mm or 55mm chainline crankset. 

Maximum chainring size: 34 tooth round chainring on 52mm chainline.

 

SUSPENSION FORK COMPATIBILITY

The RAW frame was designed and tested for use with a typical Suspension fork of 120mm travel.

Ideal dimensions: Crown height - 531mm. Offset: 44mm.

Check fork manufacturers data to ensure chosen fork falls within this dimension, longer forks will void warranty.

Stack-washer maximum: 30mm below stem is max. recommended with the Rockshox SID Ultimate. Warranty is void above this dimension. Please ensure manufacturers guidelines are followed when installing other forks.

Crown Clearance: Frame design gives suspension fork crown clearance for most modern forks. We cannot guarantee ALL forks will clear, so please check compatibility/clearance when installing.


 

HEADSET FIT

Upper: ZS44 press fit, EC44 can be used but will increase stack.

Lower: EC44 press fit.

Specifications

Our frame sets deserve the best components, so we put a great deal of thought into the mix of parts used for each bike build. Bars, stem and crankset are sized to match frame size choice. See Geometry chart for component sizing.

Frame Full UK construction, custom shaped and formed Dedacciai Zero/Uno & Reynolds steel tubeset.
Fork RockShox SID Ultimate
Headset Deda EC/ZS44mm sealed bearing headset.
Colours FilterYellow. SensorBlue. Vela
Bike Weight Large w/ WTB Rangers: 12.9kg
Clamp Mason Macro
Chainstay Protector Mason ‘Element’ 3D-Printed.
Sizes S. M. L. XL.
Shifting Shimano SLX M7100 12spd.
Chainset Shimano SLX 32T M7100
Cassette Shimano SLX M7100 10-51T
Chain Shimano SLX 12spd.
Braking Shimano SLX M7100 Post-mount.
Tyres Choice of Maxxis and Vittoria.
Wheels Hunt TrailWide 29” or Dynamo option.
Handlebar PRO Koryak 780mm.
Seatpost XFusion Manic Dropper
Saddle Fizik Terra Argo X5
Grips PRO Lock-on.
Stem PRO Koryak