Bokeh Ti Force 1X £5,200.00

Bokeh Ti Force 1X

The exclusive Bokeh Ti frameset is welded in small batches in Tuscany, Italy, and pre-order only. The bicycle builds shown here are examples only, we'll work with you to bring you your perfect bicycle.

Because of it's custom nature, we can build you an exclusive Bokeh Ti based on any of the bicycles that you see on our site and we are expert on advising on the bike that will best suit your needs. We can also source individual components from our existing quality suppliers, further enhancing the exclusivity and functionality of this very special bike.

This is our ultimate smooth, comfortable, fast, Multi-Terrain, Continent Crushing, Ultra Endurance machine! 

The BokehTi takes all the characteristics of our hugely popular, award and review winning Bokeh Alu and adds the incredibly taut, propulsive ride that is made possible by a full custom Italian tubeset made just for us by Dedacciai. 

This bike is designed for an engaging, spirited and dynamic ride across a hugely varied spectrum of surfaces and terrain. Take a look at our BokehTi gallery for an idea of how owners have specified their builds to exactly suit their riding styles or planned adventures. 

Many BokehTi owners order this bike with two sets of HUNT wheels to really open up riding possibilities and maximise their investment. Sorted geometry, disc-brakes, thru-axle front and rear and huge clearances allow the Bokeh and BokehTi to accommodate a wide range of wheel and tyre size combinations. The bikes are specifically designed to take a 700c wheel with up to 45mm tyre or a 650b wheel with up to a 50mm tyre.

Mason Custom Programme

Individual Inspriring Bicycles are what we do. All our Mason models are as close to ‘custom’ as you can get with their bespoke tubing design and carefully designed build levels. Because the BokehTi frames are built to order, we can take the ‘individual’ to a new level and give you the choice of a ‘standard’ build drawn from one of our Bokeh build levels such as the Force 1X build shown here, or choose to base your BokehTi build on any of our Definition and Resolution models. Whilst your frame is being welded and carefully finished you also have the chance to specify a full ‘Mason Custom Build’, basing your finished bicycle on a choice of components from our various carefully chosen suppliers. Please contact us HERE for further information on this process and to start your dream build.

Each frame is welded to order: This is a highly refined and small volume product, so we make to pre-order only by taking a 50% deposit for the frameset.

We can make certain detail alterations to the frame features and geometry and we can discuss these as part of the ordering process.

Please contact us to get the process started.

We refine your bike build whilst the frame is being built and finely finished, we then carefully assemble each bike at our Mason Cycles Workshop.

Features

  • Dedacciai, custom formed & shaped, Titanium 3AL-2.5V frame with Mason Parallax full carbon Thru-Axle fork.
  • Reynolds 3D-Printed Titanium thru-axle dropouts.
  • MASON bead-blast 'Structural Finish' and mirror-polished logos.
  • Lightweight, full SRAM Force 1x HRD groupset with hydraulic disc brakes.
  • MASON Custom: Build your dream bicycle from a choice of components from our various carefully chosen suppliers.
  • Specially developed Mason x Hunt 650B AdventureSport wheelset.
  • Fast-rolling Panaracer Comet Hardpack 650B for trail and road performance.
  • Ultra-light and triangulated for stiffness Deda Superzero stem with aerodynamic Superzero handlebar.
  • 31.6mm Carbon Mason Penta microadjust post and Mason Macro clamp.
  • Fully and discretely eyeletted for rack and ‘guards, removable by request.
  • Integrated Parallax fork-crown boss for fixed light set-ups.
  • Clearance for 700C x 41mm | 650B x 50mm tyres with 'guards.
  • 3rd Bottle cage bosses on the underside of the down tube designed to work seamlessly with Fabric bottles and tool kegs.

Details

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, but we can sometimes make sizing adjustments at your request.

See full geometry chart for details.

Order this bike Or ask us a question

…USA trip has now come to an end with 6,933 km travelled and 64,894 m climbed. Feeling a mixture of sadness that the adventure is over mixed with relief that I'll rest for more than a day and anticipation of being back with my family again.

Thank you for creating the steed that carried me the whole way without blinking once - a true thoroughbred! The bike, combined with a bike packing setup, was brilliant and contributed hugely to my enjoyment of munching up the miles.
Andrew Gardiner | BokehTi Rival 700c.

 

I love the BokehTi, it instils a sense of adventurous confidence that allows you to take it that little bit faster and further: It's never going to be the Bokeh that limits me.

Matt Wright | BokehTi Force 650b.

A hilly club ride of 100km with a varied mixture of road surface, anything from smooth tarmac to pot hole and gravel infested lanes, Whilst others moaned about these I was impressed at how much the bike soaked up and how stable it felt. Many thanks for designing and building such a great bike - It looks amazing and rides even better.
Patrick Piper | BokehTi Force 700c.

Technical info

Select size
 

Dimensions
(mm unless specified)
A > SEAT TUBE C/T 500
B > SEAT TUBE C/C 453
C > BB DROP 75
D > REAR CENTRE 435
E > TT EFFECTIVE 519.9
F > TT ACTUAL 503.9
G > STACK 537.9
H > REACH 363.5
I > STAND-OVER 764.1
J > OFFSET 50
K > TRAIL 75.3
L > FORK CROWN HEIGHT 398
M > HEAD ANGLE 70
N > HEAD TUBE LENGTH 115
O > SEAT TUBE ANGLE 74
P > WHEELBASE 1013.7
Q > HANDLEBAR (OUTSIDE DIMENSION) 42
Dimensions
(mm unless specified)
A > SEAT TUBE C/T 520
B > SEAT TUBE C/C 473.0
C > BB DROP 75
D > REAR CENTRE 435
E > TT EFFECTIVE 535.9
F > TT ACTUAL 520.3
G > STACK 554
H > REACH 374.0
I > STAND-OVER 781.8
J > OFFSET 50
K > TRAIL 72
L > FORK CROWN HEIGHT 398
M > HEAD ANGLE 70.5
N > HEAD TUBE LENGTH 130
O > SEAT TUBE ANGLE 74
P > WHEELBASE 1021.8
Q > HANDLEBAR (OUTSIDE DIMENSION) 42
Dimensions
(mm unless specified)
A > SEAT TUBE C/T 540
B > SEAT TUBE C/C 493.5
C > BB DROP 73
D > REAR CENTRE 435
E > TT EFFECTIVE 551
F > TT ACTUAL 534.4
G > STACK 568.1
H > REACH 376.2
I > STAND-OVER 799.4
J > OFFSET 50
K > TRAIL 68.7
L > FORK CROWN HEIGHT 398
M > HEAD ANGLE 71.0
N > HEAD TUBE LENGTH 145
O > SEAT TUBE ANGLE 73
P > WHEELBASE 1028.4
Q > HANDLEBAR (OUTSIDE DIMENSION) 44
Dimensions
(mm unless specified)
A > SEAT TUBE C/T 560
B > SEAT TUBE C/C 513.7
C > BB DROP 73
D > REAR CENTRE 435
E > TT EFFECTIVE 561.4
F > TT ACTUAL 546.3
G > STACK 579.5
H > REACH 383.4
I > STAND-OVER 814.8
J > OFFSET 50
K > TRAIL 65.4
L > FORK CROWN HEIGHT 398
M > HEAD ANGLE 71.5
N > HEAD TUBE LENGTH 155
O > SEAT TUBE ANGLE 73
P > WHEELBASE 1034.4
Q > HANDLEBAR (OUTSIDE DIMENSION) 44
Dimensions
(mm unless specified)
A > SEAT TUBE C/T 580
B > SEAT TUBE C/C 534.1
C > BB DROP 70
D > REAR CENTRE 435
E > TT EFFECTIVE 580.8
F > TT ACTUAL 567.2
G > STACK 587.9
H > REACH 395.2
I > STAND-OVER 831.0
J > OFFSET 50
K > TRAIL 62.1
L > FORK CROWN HEIGHT 398
M > HEAD ANGLE 72
N > HEAD TUBE LENGTH 165
O > SEAT TUBE ANGLE 72.5
P > WHEELBASE 1045.4
Q > HANDLEBAR (OUTSIDE DIMENSION) 46
Dimensions
(mm unless specified)
A > SEAT TUBE C/T 60
B > SEAT TUBE C/C 554.2
C > BB DROP 70
D > REAR CENTRE 435
E > TT EFFECTIVE 590.7
F > TT ACTUAL 577.1
G > STACK 607.0
H > REACH 399.1
I > STAND-OVER 850.0
J > OFFSET 50
K > TRAIL 62.1
L > FORK CROWN HEIGHT 398
M > HEAD ANGLE 72
N > HEAD TUBE LENGTH 185
O > SEAT TUBE ANGLE 72.5
P > WHEELBASE 1055.4
Q > HANDLEBAR (OUTSIDE DIMENSION) 46

This page gives you some guidelines based on height, but these are only a starting point for a proper bike fitting. The dimensions show the extremes of useable frame size based on height.

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 even skill level are very different. This means that there will invariably be different frame size requirements, even for people of the same height and inseam.

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 I would always recommend having a proper bike fit done before committing, especially if you feel like you may be between sizes.

We have specified bar width, stem length, and crank length to be the best fit for the majority of riders on each frame size, but we can sometimes make adjustments to this at your request. Please contact us for advice, or just let us know your sizing requirements in the comments box at the checkout page.

We'll set-up the front brake to be operated by the Right Hand lever for all UK destinations. For destinations outside of the UK, we'll set-up your bicycle with Front Brake/Left Hand as standard. It's no problem for us to set-up the brakes in your own chosen configuration, please state in 'Order Notes' how you like 'em.

If you are between 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.

Multiport

Unique to MASON. Our frames use an adaptable, internal cable routing system. Developed by us to allow your Mason frame to be used with a combination of control systems and adapt and evolve with your requirements and riding styles. We are the first to bring this type of system to a performance steel frame. Interchangeable alloy parts allow five options:

1. Full cable outer. 2. Hydraulic Hose. 3. Split outer. 4. Electronic cable [e.g. Shimano Di2]. 5. Blank.

Taper Head Tubes

Our frames use modern 1-1/8” - 1.5” taper head tubes. Pioneered by composite frames, the taper head tube makes huge sense for metal frames too;

The large overall diameter provides a useful weld area. The fully integrated headset is light and has a very low stack-height. Large 1.5” lower bearing, mated to a tapered carbon fork steerer, spreads the load and gives flex-free braking and instant response to steering input.

Threaded Bottom Brackets

We choose a more traditional 68mm, BSA, threaded standard for our AdventureSport frames because we believe it 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.

BoatTail Stays

Unique to MASON. The seat stays flow out of the ovalised top tube and then curve and taper down to meet the chain stays which curve up towards the axle. We call this ‘BoatTail’, a custom bend giving disc-rotor and calliper clearance, helping to avoid chain-slap on the rough stuff and allowing a little compliance to help smooth the ride.

F-Stop Axle System

The Mason F-Stop Insert System was developed for our exclusive Aperture2 fork, used on our Definition, Resolution and Aspect bicycles.

The axle uses our 12mm Thru-Axle 'SwitchLever' which features a removable CNCd lever key, fitted with a 6mm hex key. You can leave the key in and it's there for easy wheel removal, or take it off and leave it in your pocket for a clean dropout.

The Aperture2 fork also features removable tip inserts meaning that all wearing parts are replaceable, vastly extending the life of your Mason bicycle.

Disc Brakes

This frame is designed for disc brakes. They work consistently in all conditions, pull up quicker in the wet, they don't grind your expensive rims into black sludge and in my experience they change the whole riding experience for the better, especially when coupled with modern disc-specific wheels and high-volume tyres. You’ll find yourself riding in a more confident, controlled, fluid and ultimately more efficient way.

InBoard Disc-Mount

The calliper is mounted on the chain stay, this allows us to use lighter more comfortable seat-stays and gives a flex free mounting for the post-mount components to be welded to. Mounting the brake on the chain stay also keeps it cleanly out of the way of rack and ‘guard stays.

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 advatage that it is easy to strap frame packs to the frame tubes without being hindered by external cabling and hoses.

Integrated Headset

Integrated, 41.8ø upper, 51.8ø lower, for taper head tube. Both bearings are ‘ACB’, meaning ‘Angular Contact Bearings’. The head-tube seat angle is 45º.

The headset drops into a tapered seat in the head tube and is tensioned using a headset tensioner within the fork steerer. Tensioning the headset centres it on the taper and prevents any play. The larger lower bearing allows a tapered steerer and larger crown. This gives sharper response, helps reduce flex under braking and spreads bearing load.

1x Drivetrain

'1x' is a multi-terrain performance drivetrain with maximum chain security thanks to the narrow-wide chainring and jockey wheels and 'clutched' rear-mech. The range of gears is equivalent to a 2x compact drivetrain, but with the elimination of doubled-up crossover gears. '1x' are lighter, quieter, and more secure.

ISO Testing

All our frames complete the intensive strength and fatigue testing to fully comply with ISO standards. The AdventureSport range of frames are put through the tough road race ISO testing, with its brutal Horizontal Fatigue test. The Parallax fork goes through the MTB test with it's even tougher 'Drop Testing' standards. Because of this we are confident that these frames will last you a lifetime of hard riding.

It's not law that frames and forks have to be tested to their limits like this, but our frames will always be tested in this way, so you can be sure that your MASON frame not only looks beautiful with a ride quality to match, but it is tough, safe and dependable too.

650B/700C

The Bokeh is optimsed for large-volume treaded tyres, and is designed for 650B and 700C wheel sizes. Using the smaller 650B wheel means that you can fit a larger-volume treaded tyre, but with the same rolling radius as a 700C x 28mm wheel/tyre.

We've worked together with HUNT Bike Wheels to develop the tubeless-ready, extra-wide, 650B 'AdventureSport' wheelset: replaceable catridge bearings; traditional J-bend spokes; easy strip down of the hub system requiring traditional tools only.

Bottle #3

A third bottle cage mount at the base of the down-tube to allow for an additional bottle or tool keg to be fitted. Designed for low-mount Fabric 'cageless' bottles and kegs (but of course suitable for traditional bottles and cages too), the third bosses are positioned close to the BB to maximise tyre clearance and keep the centre of gravity low. 

FlatMount Brake Calipers

Flat mount disc-brake callipers are lighter, neater, and open up more space within the dropout area for racks and ‘guards. The calliper is mounted to the dropout, allowing us to use a lighter, more comfortable seat-stay.  Up front, the calliper is mounted directly to the fork [via the brake manufacturers adaptor] and offers a cleaner and more minimalist appearance and also provides a compact packaging of the brake caliper.

 

DForm Downtube

Our Resolution frame uses a special 'D-Section', Columbus Spirit, down tube. We also worked with Dedacciai to design and tool for the exclusive Mason ‘DForm’ Ti down tube for the BokehTi. It is not a simple ‘D’ section and varies in shape from being taller/narrower at the head tube to being wider and lower in section where it meets the BB shell. This shape allows a very wide weld where the tube meets the BB, giving it great stability and ensuring that the weld doesn’t excessively overlap onto the base of the seat tube.

Structural FInish

Our 'structural surface finish' is highly resilient to dirt, debris, and abrasion. The soft-sheen, bead-blasted surface finish helps to stress relieve the skin of the frame after welding. This process improves its toughness, discourages surface cracking and produces a beautiful, long lasting lustre on the Ti tubing.

Re-Machinable Bearing Seats

Fully integrated, bonded in headset cups are replaceable [re-machinable by Mason] in the rare occurance of wear or damage. Mason frames and bicycles are an investment and features like this vastly extend the lifetime of your bicycle.

QuadSlot Seat Tube

Rather than the usual single slot, we machine 4 slots into the seat tube to allow the seat-clamp to exert even and gentle clamping force on your seat-post for smooth adjustment. The QuadSlot system also reduces stress loadings on the seat tube and post, prolonging the life of both. The slots are also positioned to discourage dirt ingress from the rear tyre.

3D-Printed Ti Dropouts

We were heavily involved in the development of the highly advanced Reynolds UK, 3D printed Titanium, thru-axle/flat-mount dropouts that we use for the BokehTi. The dropouts are extremely precise and lightweight and provide highly accurate and stiff axle retention. The interior is a highly complex structure, only made possible by using this advanced 3D ‘Additive Manufacturing’ process, internal ribs, gussets and guides deal with riding forces and guide internally routed electronic-shifting cables. Alongside the dropouts, we worked with Reynolds to create beautiful new double-bend and tapered titanium chain stays. The stays mate perfectly with the dropouts and combine to give us the huge tyre clearance and smooth propulsion that we require.

For you this means perfect alignment and extremely efficient power transfer, helping to give the BokehTi it’s incredible ride quality and ultra-distance, terrain conquering mastery.

Thru-Axle Front & Rear

Our Steel and Alu. frames use the Mason ‘F-Stop’ thru-axles up front and bolt-thru axles at the rear. Our Titanium frames use the F-Stop axles front & Rear.
The F-Stop system is clockable to your desired position and can be adjusted as it 'beds-in', giving you a 'tool-free' and serviceable thru-axle with a familiar QR-style lever locking system. Threads are replaceable if damaged.

31.6 Seat Post

The titanium tubing with custom tube shapes and bends does a superb job of damping vibration. This means that we can use an oversize Ø34.9mm seat tube to give maximum stability to the BB shell, with our Ø31.6 Mason Penta seat post enhancing rider output.

Dedacciai Ti Tubing

The BokehTi uses a full compliment of custom 3AL-2.5V/GR9 seamless tubing. Every tube is designed or shaped specifically for Mason and specially for the BokehTi, nothing is ‘Off the shelf’. Dedacciai tooled up for our special ‘Dform’ down tube and all other tubes have bends and profiles developed between Mason, Dedacciai and our frame maker in Italy. THIS is the key to the superb, ‘grin inducing’ ride of these award winning bikes.

The BokehTi possesses the spirit and soul of the Bokeh Alu, it retains its sorted geometry and incredible lively, engaging feel but with added tautness and smooth propulsion provided by a modern, full custom Titanium tubeset.

Parallax Thru-Axle Fork

Unique to MASON. This frame is fitted with our ‘Parallax’ 465g, Ø12mm thru-axle/flat-mount, monocoque carbon fork. We develop our own custom tubing and wheels, so when it comes to the forks for our bicycles it makes total sense for us to design and tool up for our own fork too. We don’t want to compromise ride-feel, balance and performance by using an ‘off-the-shelf’ and generic product.
Features: Custom layup UD carbon construction, Mason F-Stop axle with clockable axle, allowing you to re-position the release lever as things bed in. TrueTaper steerer, sealed Internal Routing, dynamo light eyelet on crown, discrete eyelets for mudguard mounting. Huge clearance with full mudguard clearance even when using the largest tyres.

Recommended tyre sizing: 700c x 40mm [45mm Max.] 650b x 50mm/2” [2.1” Max.]

Essental Dimensions: Bokeh

BRAKING

Rotor Size: The fork can take a 140 or 160mm rotor [using adaptor]. We recommend no smaller than 160mm up front if you are using cable braking. 160mm is the maximum recommended diameter for the rear and the native rotor size is 140mm.

Calliper Type: These frames are designed for flat-mount calipers. It's possible to fit post-mount calipers front and rear with the use of a flat > post-mount adapter.

NOTE: This frame is compatible with most modern disc-brake systems but may not be suitable for ALL brake callipers. Please check clearance before purchasing your braking system.

WHEELS + AXLE SPACING

Ø12mm Thru-axle Front / Ø12mm Thru-axle rear.

Front axle spacing: 100mm. Rear axle spacing: 142mm.

Axle length/pitch: Bokeh: Front - 120mm/1.5P. Rear - 160mm/1.5P. BokehTi: Front - 120mm/1.5P. Rear - 172mm/1.5P.

TYRES

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

Bokeh:

Max tyre widths with 'guards:

700C x 41mm | 650B x 50mm.

SEAT POST

Bokeh: 27.2mm. BokehTi: 31.6mm.

SEAT CLAMP

Bokeh: 31.8mm. BokehTi: 34.9mm.

FRONT MECH

Bokeh: 31.8mm. BokehTi: 34.9mm.

BB TYPE

68mm shell width. BSA threaded.

FORK

Headset type: Integrated, 41.8Ø upper, 51.8Ø lower, for taper head tube. Angular Contact Bearings. The head-tube seat angle is 45º.

Stack-washer maximum: 40mm below stem is max. recommended for carbon steerer. Warranty is void above this dimension.

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 Exclusive, Mason tooled, Dedacciai custom-formed Titanium tubeset with advanced Reynolds 3D printed dropouts and S-Bend chain stays..
Fork Mason Parallax full carbon UD Thru-axle/Flat-mount fork.
Headset DEDA Low profile, integrated headset.
Bike Weight 54cm 9.1kg
Sizes 50, 52, 54, 56, 58, 60.
Shifting SRAM Force 1X.
Chainset SRAM Force 1X 42T.
Cassette SRAM XG-1180.
Chain SRAM PC1170.
Braking SRAM Force Flat-Mount Hydro.
Tyres Panaracer Comet Hardpack 27.5" x 2.0.
Wheels MASON X Hunt 650B AdventureSport Disc Wheelset.
Handlebar Deda Superzero Alloy.
Clamp MASON Macro alloy ultralight.
Seatpost MASON Penta carbon, microadjust.
Saddle Fabric Scoop, Bokeh Custom, Carbon-rail, Shallow, Elite Alloy. 260g.
Bar Tape Fabric Hex Tape, Black.
Stem Deda Superzero.