SLR GRX
The Award Winning SLR is available with Shimano GRX, as shown here, also with GRX 12 speed options, GRX Di2 and with various other build levels, similar to the options for MASON Bokeh and MASON Resolution. Or Contact Us for your dream build!
The new MASON SLR steel bicycle is the result of our focus on ride quality, long-distance performance, and luxury grand-touring capabilities. A new chapter in Mason Cycles’ obsession with high performance steel, designed in collaboration with one of the most skilled and established bicycle frame builders in Italy - Cicli Barco.
Features
- 100% Italian TIG-welded/silver-brazed frame manufacturing, wet-painting, and finishing.
- European-made, exclusively custom shaped and formed, phosphate anti-corrosion treated Dedacciai Zero/Zero Uno tube set.
- RangeFinder AR carbon fork which is custom-tuned for the SLR. Features pannier & ‘rando’ style rack mounts, Ø12mm Thru-axle, flat-mount, and 700 X 45mm tyre clearance.
- Fully internal routing allows ease of fitting straps for mounting frame bags, keeps hoses, wires and control cables safe from damage and allows for easy cleaning.
- Modern 1-1/8” - 1.5” tapered Dedacciai Zero Uno head tube with integrated Deda head set.
- Dedacciai Zero Uno seat tube with flush-fitting alloy reduction sleeve for 27.2mm seat post.
- Clearance for 700C x 40mm tyres AND fenders.
- Discrete internal dynamo-light routing in top-tube with stainless-steel port reinforcement as standard.
- Full Shimano GRX 812 11spd. 1X or 2X mechanical groupset.
- Choices of Schwalbe, Rene Herse and Continental tubeless tyres designed for maximum speed, ride quality and all-surface control.
Technical info
Select size
|
Dimensions (mm unless specified) |
||
|---|---|---|
| A > | SEAT TUBE C/T | 480 |
| B > | SEAT TUBE C/C | 432 |
| C > | BB DROP | 75 |
| D > | REAR CENTRE | 430 |
| E > | TT EFFECTIVE | 516.5 |
| F > | TT ACTUAL | 498.3 |
| G > | STACK | 555.0 |
| H > | REACH | 360.0 |
| I > | STAND-OVER | 738.5 [700 x 35] |
| J > | OFFSET | 50 |
| K > | TRAIL Trail data for more wheel/tyres in full geo. chart (where applicable) |
73.8 [700 x 35] |
| L > | FORK CROWN HEIGHT | 398 |
| M > | HEAD ANGLE | 70.0 |
| N > | HEAD TUBE LENGTH | 130 |
| O > | SEAT TUBE ANGLE | 74.5 |
| P > | WHEELBASE | 1011.3 |
| Q > | HANDLEBAR (OUTSIDE DIMENSION) | 40 |
|
Dimensions (mm unless specified) |
||
|---|---|---|
| A > | SEAT TUBE C/T | 500 |
| B > | SEAT TUBE C/C | 452.1 |
| C > | BB DROP | 75 |
| D > | REAR CENTRE | 430 |
| E > | TT EFFECTIVE | 524.1 |
| F > | TT ACTUAL | 506.4 |
| G > | STACK | 564.4 |
| H > | REACH | 365.0 |
| I > | STAND-OVER | 758.8 [700 x 38] |
| J > | OFFSET | 50 |
| K > | TRAIL Trail data for more wheel/tyres in full geo. chart (where applicable) |
74.9 [700 x 38] |
| L > | FORK CROWN HEIGHT | 398 |
| M > | HEAD ANGLE | 70.0 |
| N > | HEAD TUBE LENGTH | 140 |
| O > | SEAT TUBE ANGLE | 74.5 |
| P > | WHEELBASE | 1019.7 |
| Q > | HANDLEBAR (OUTSIDE DIMENSION) | 40 |
|
Dimensions (mm unless specified) |
||
|---|---|---|
| A > | SEAT TUBE C/T | 520 |
| B > | SEAT TUBE C/C | 472.5 |
| C > | BB DROP | 75 |
| D > | REAR CENTRE | 430 |
| E > | TT EFFECTIVE | 535.1 |
| F > | TT ACTUAL | 518.0 |
| G > | STACK | 575.8 |
| H > | REACH | 373.1 |
| I > | STAND-OVER | 778.2 [700 x 38] |
| J > | OFFSET | 50 |
| K > | TRAIL Trail data for more wheel/tyres in full geo. chart (where applicable) |
71.6 [700 x 38] |
| L > | FORK CROWN HEIGHT | 398 |
| M > | HEAD ANGLE | 70.5 |
| N > | HEAD TUBE LENGTH | 150 |
| O > | SEAT TUBE ANGLE | 74.5 |
| P > | WHEELBASE | 1026.9 |
| Q > | HANDLEBAR (OUTSIDE DIMENSION) | 42 |
|
Dimensions (mm unless specified) |
||
|---|---|---|
| A > | SEAT TUBE C/T | 540 |
| B > | SEAT TUBE C/C | 492.9 |
| C > | BB DROP | 73 |
| D > | REAR CENTRE | 430 |
| E > | TT EFFECTIVE | 550.3 |
| F > | TT ACTUAL | 532.0 |
| G > | STACK | 588.0 |
| H > | REACH | 374.3 |
| I > | STAND-OVER | 795.3 [700 x 38] |
| J > | OFFSET | 50 |
| K > | TRAIL Trail data for more wheel/tyres in full geo. chart (where applicable) |
71.6 [700 x 38] |
| L > | FORK CROWN HEIGHT | 398 |
| M > | HEAD ANGLE | 70.5 |
| N > | HEAD TUBE LENGTH | 165 |
| O > | SEAT TUBE ANGLE | 73.5 |
| P > | WHEELBASE | 1033.5 |
| Q > | HANDLEBAR (OUTSIDE DIMENSION) | 44 |
|
Dimensions (mm unless specified) |
||
|---|---|---|
| A > | SEAT TUBE C/T | 560 |
| B > | SEAT TUBE C/C | 513.1 |
| C > | BB DROP | 73 |
| D > | REAR CENTRE | 430 |
| E > | TT EFFECTIVE | 558.2 |
| F > | TT ACTUAL | 540.5 |
| G > | STACK | 602.2 |
| H > | REACH | 378.0 |
| I > | STAND-OVER | 811.8 [700 x 38] |
| J > | OFFSET | 50 |
| K > | TRAIL Trail data for more wheel/tyres in full geo. chart (where applicable) |
71.6 [700 x 38] |
| L > | FORK CROWN HEIGHT | 398 |
| M > | HEAD ANGLE | 70.5 |
| N > | HEAD TUBE LENGTH | 180 |
| O > | SEAT TUBE ANGLE | 73.5 |
| P > | WHEELBASE | 1042.2 |
| Q > | HANDLEBAR (OUTSIDE DIMENSION) | 44 |
|
Dimensions (mm unless specified) |
||
|---|---|---|
| A > | SEAT TUBE C/T | 580 |
| B > | SEAT TUBE C/C | 533.5 |
| C > | BB DROP | 73 |
| D > | REAR CENTRE | 430 |
| E > | TT EFFECTIVE | 579.4 |
| F > | TT ACTUAL | 561.1 |
| G > | STACK | 613.6 |
| H > | REACH | 385.0 |
| I > | STAND-OVER | 827.1 [700 x 38] |
| J > | OFFSET | 50 |
| K > | TRAIL Trail data for more wheel/tyres in full geo. chart (where applicable) |
68.3 [700 x 38] |
| L > | FORK CROWN HEIGHT | 398 |
| M > | HEAD ANGLE | 71.0 |
| N > | HEAD TUBE LENGTH | 190 |
| O > | SEAT TUBE ANGLE | 72.5 |
| P > | WHEELBASE | 1047.8 |
| Q > | HANDLEBAR (OUTSIDE DIMENSION) | 46 |
|
Dimensions (mm unless specified) |
||
|---|---|---|
| A > | SEAT TUBE C/T | 600 |
| B > | SEAT TUBE C/C | 554.0 |
| C > | BB DROP | 70 |
| D > | REAR CENTRE | 430 |
| E > | TT EFFECTIVE | 597.2 |
| F > | TT ACTUAL | 581.0 |
| G > | STACK | 622.2 |
| H > | REACH | 400.4 |
| I > | STAND-OVER | 845.3 [700 x 38] |
| J > | OFFSET | 50 |
| K > | TRAIL Trail data for more wheel/tyres in full geo. chart (where applicable) |
65.1 [700 x 38] |
| L > | FORK CROWN HEIGHT | 398 |
| M > | HEAD ANGLE | 71.5 |
| N > | HEAD TUBE LENGTH | 200 |
| O > | SEAT TUBE ANGLE | 72.5 |
| P > | WHEELBASE | 1062.1 |
| Q > | HANDLEBAR (OUTSIDE DIMENSION) | 46 |
|
Dimensions (mm unless specified) |
||
|---|---|---|
| A > | SEAT TUBE C/T | 620 |
| B > | SEAT TUBE C/C | 573.9 |
| C > | BB DROP | 70 |
| D > | REAR CENTRE | 430 |
| E > | TT EFFECTIVE | 607.8 |
| F > | TT ACTUAL | 591.5 |
| G > | STACK | 641.1 |
| H > | REACH | 405.0 |
| I > | STAND-OVER | 866.8 [700 x 38] |
| J > | OFFSET | 50 |
| K > | TRAIL Trail data for more wheel/tyres in full geo. chart (where applicable) |
5.1 [700 x 38] |
| L > | FORK CROWN HEIGHT | 398 |
| M > | HEAD ANGLE | 71.5 |
| N > | HEAD TUBE LENGTH | 220 |
| O > | SEAT TUBE ANGLE | 72.5 |
| P > | WHEELBASE | 1073.1 |
| Q > | HANDLEBAR (OUTSIDE DIMENSION) | 46 |
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.
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.
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 | SLR custom formed, TIG welded, Dedacciai Zero/Uno. |
| Fork | Mason Rangefinder AR custom tuned, full carbon, thru-axle fork with rack-mounts. |
| Headset | Deda IN-5 Low profile integrated headset. |
| Colours | ModeRed. ShutterBlack. |
| Bike Weight | 54cm - approx. 9.5kg. |
| Sizes | 48, 50, 52, 54, 56, 58, 60, 62. |
| Shifting | Shimano GRX-810 Mechanical Shifting. |
| Cassette | Shimano M8000 11-42. / CS800 11-34 |
| Chain | Shimano HG701 11 Spd. |
| Chainset | Shimano GRX-810 1x (42T) / 2x (48/31) |
| Braking | Shimano GRX-810 Hydro Calipers. |
| Tyres | Choice of premium Schwalbe & Continental Tubeless tyres. 30mm G-One Standard. |
| Wheels | MASON x HUNT AllRoad Disc wheels. Others available. |
| Handlebar | Deda Zero2 |
| Clamp | MASON Macro alloy ultralight. |
| Seatpost | MASON Penta carbon, microadjust. |
| Saddle | Fizik Tempo Argo R3. |
| Bar Tape | Mason Contact Tape. |
| Stem | Deda Zero2 |