Fast, focused and modern high performance gravel bike handcrafted to perfection
Frame from £3,799 | Bikes From £5,695
  • Frame Material 3AL 2.5V double butted / 6Al 4V titanium blend
  • Frame Finish Satin bead with anodised Logos. Additional finish options available
  • Dropouts Paragon, thru-axle
  • Hanger Enigma Type 2
  • Bottom Bracket Custom machined Ti T47 86.5mm
  • Axle Size 12mm x 100mm front, 12 x 142mm bolt thru
  • Headtube CNC machined 44mm
  • Cable Routing Internal via custom entry ports or fully integrated cockpit option
  • Brake Mount 160 front / 140 rear flat mount
  • Seat Tube External 34.9mm
  • Seat Post 31.6mm or 27.2mm with shim
  • Front Derailleur 34.9mm band-on
  • Headset In-Route ZS44 upper/EC44 lower (Chris King Aeroset 3)
    Integral ZS44 upper/EC44 lower (Chris King inset 7/8)
  • Tyre Size Max. 700c x 50mm / 650b x 50mm

We view all our riders as individuals and as such all our stock geometries are unisex in design – offering 11 finely tuned stock sizes from 50cm to 60cm, with the additional option of a full custom design and build (+£300).

Because every Esker frame is made to order here in our Sussex workshop, we have complete control from start to finish. This allows us to control every step of production, and allows you to fine tune your Esker your way. From custom geometry through to bespoke finishes and more. So if a stock geometry frame doesn’t work for you, we’ll make you one that does, and with careful consideration on components we can further customise every build to ensure the fit is perfect.

We feel that having a frame that fits you perfectly is a critical part of the process. We have over 20 years of bike fitting experience and data to call upon to ensure your riding position is absolute pinpoint. You can make an appointment here for a fitting. No obligation.

Alternatively you can send us any fit data you have or if you have a bike that fits you perfectly, let us know and we can go from there.

Further information on our sizing and frame geometry can be found here.

Opting for an individually crafted frame presents the benefit of total customisation, tailored specifically to match your distinctive style and riding preferences. This flexibility enables the meticulous adjustment of each frame to cater to riders' specific needs, encompassing personalised frame geometry, customised cable routing, the addition of extra eyelets, and the option for unique frame finishes, including bespoke paint designs. Virtually anything is within the realm of possibility.

When considering complete bike purchases, the range of achievable specifications is extensive. If you have a specific vision for your upcoming bike build, just let us know, and we can turn your ideas into reality.

Get in touch:

Call, email, or book a visit online by clicking here .


During our conversation we will better understand:
-Your riding style
-Your objectives and targets
-Frame sizing based on fitting data

Precise Understanding:

Once all the information has been collected we will draw up a cad image with your measurements and position for sign off. We will also send over detailed order confirmation which will list out all the parts for your bike build.

Sign off:

Once the order and frame design has been signed off and given the green light we will request a £1000 deposit to reserve a build slot.

Enigma Partner:

Alternatively, get in touch with your local Enigma dealer who will carefully guide you through the process.

Once the design and specification are complete and signed off we will request your deposit. Once paid you be given a production slot and we will then start to collate/order any additional tubing or components for your order.

Please note, if you’re intending to pay the full amount through a cycle scheme then your deposit will be refunded once we’ve processed your voucher, normally upon handover of your bike or frameset.

The next part is the hard part…..the wait! We aim to have your frame assembled between 60-90 days depending on how customised the geometry is. If you are having a full bike build During this time any parts for a build will have been collated and ordered so once the frame has been signed off, the mechanics can start assembly. Please allow extra time for any paintwork

Upon completion of the construction of your Enigma and its readiness for handover, we will prompt you for settling the outstanding balance. We gladly accept all major debit/credit cards and collaborate with prominent Ride to Work schemes, as depicted below. It's important to note that, due to elevated commission rates associated with specific schemes, a surcharge may be applicable. Additionally, we extend the option of financing through V12. To streamline the process, we kindly request information about your preferred payment method, be it through a scheme or utilizing our financing option, at the time of placing your order.

The Inspiration

Building upon the success of our 6al 4v Excel model, we set out to create a race-inspired gravel bike, mirroring the outstanding on-road performance of the Excel. Harnessing the inherent advantages of 6al 4v titanium—its lightweight nature, super strength and lateral stiffness, our aim was to engineer a swift and agile bicycle capable of effortlessly navigating diverse terrains. After extensive testing, we found that a deliberate blend of 6al 4v and 3al 2.5v titanium yielded the optimal balance between performance and comfort. This alloy fusion not only enhances the bike's overall performance but also ensures the comfort needed for extended rides. The Esker is a testament to this thoughtful synthesis of materials, delivering a superior riding experience by marrying the weight and stiffness benefits of 6al 4v titanium with the comfort elements of 3al 2.5v.

Each Esker frame is a bespoke masterpiece, meticulously crafted to order, embodying the artistic essence that defines the Enigma brand.

Our Signature models are meticulously handcrafted in-house, providing us with comprehensive control over the entire build process. From expert design and precision frame building to frame finishing, painting and final bike assembly, we manage each step to meet the highest standards. Throughout every step, we conduct thorough quality checks to ensure the excellence of our workmanship and materials. This commitment guarantees that the end product not only meets but surpasses our exacting standards, deserving the prestigious Enigma logo.

We take great pride in our craft, the dedication of our team, and our role as one of the very few workshops globally producing world-class handcrafted titanium frames.

All frames that carry the Signature logo are proudly made in Sussex, England reflecting our commitment to quality and craftsmanship here in the UK.

Esker - Signature
Esker - Signature
Esker - Signature
Esker - Signature
Esker - Signature
Esker - Signature
Esker - Signature

The Details

The Esker boasts a plethora of features that elevate the riding experience. Taking cues from the Excel, it's road focusssed counterpart, Esker introduces an integrated cockpit upgrade option, appealing to riders seeking a sleek, modern, cable-free aesthetic. The inclusion of a GR9 T47 bottom bracket shell as standard enables concealed routing to the rear stay, while its generous tyre clearance of up to 50mm provides ample space for diverse setups. Beautifully handcrafted, each Esker offers customizable options for additional mounts, fittings, and routing to accommodate dropper seat posts. This bike is purpose-built for fast gravel riding, excelling as a versatile all-day performer.


  • Titanium matrix Gr9/Gr5 double-butted tube set with 42mm 6AL 4V down tube
  • Tyre clearance up to 50mm
  • 3D printed dropouts
  • Dual pass micro-tig welded construction
  • Internal cable routing as standard plus fully-Integrated Enve/Chris King cockpit option
  • Sustainably handcrafted to order in England
  • Custom machined T47 BB and 44mm head tube


Enigma Customer - Simon Cook

I'm really, really pleased with it - it's comfortable, stable and looks great! It's been on and off road locally on the Ridgeway (dry dirt flint track) and round the Elan Valley and forest tracks in Wales and covered well over a thousand miles so far. 

Esker Geometry

Frame Size (cm) A - Effective Top Tube (mm) B - Seat Tube (mm) C - Head Tube (mm) D - Chain Stay (mm) E - BB Drop (mm) F - Seat Angle° G - Head Angle° H - Fork Offset (mm) I - Stack (mm) J - Reach (mm) K - Wheel Base Down Tube OD Top Tube OD
50 500 460 95 435 75 76 70.5 50 534 364 1008 42 32
51 510 475 105 435 75 75.5 70.5 50 544 366 1009 42 32
52 520 490 115 435 75 75 70.5 50 553 369 1020 42 32
53 530 505 125 435 75 74.5 71 50 564 371 1021 42 32
54 540 520 135 435 75 74 71 50 573 374 1027 42 32
55 550 535 145 435 75 74 71 50 583 381 1037 42 32
56 560 550 155 435 75 74 71.5 50 595 388 1043 42 32
57 570 565 165 435 75 73.5 71.5 50 604 390 1048 42 32
58 580 580 175 435 75 73 71.5 50 614 391 1053 42 32
59 590 595 185 435 75 73 72 50 625 398 1058 42 32
60 600 610 195 435 75 73 72 50 635 405 1068 42 32

The sizing chart below is designed as an approximation guide. If you need help determining the size frame you require, we always recommend a test ride and/or bike fit at either our showroom here in Sussex or at your nearest Enigma dealer, where possible. We have extensive experience fitting customers to our bikes and can confidently recommend the correct size for you


Frame Size (Horizontal Top Tube)   Rider Height (cm) Rider Height (Inches) Saddle Height (mm)
50 158 5'2" 660
51 162 5'4" 680
52 166 5'5" 700
53 170 5'7" 720
54 174 5'8" 740
55 178 5'10" 760
56 182 6'0" 780
57 186 6'1" 800
58 190 6'3" 820
59 194 6'4" 840
60 198 6'6" 860

Our team of expert fitters are always on hand to help you choose, so if in any doubt please get in touch.

Customer Bikes

Need some inpiration? Check out some of the latest Esker builds.

Esker - Signature
Esker - Signature
Esker - Signature
Esker - Signature
Esker - Signature
Esker - Signature
Esker - Signature