Built for the Back Country
We here at Esker enjoy long rides into the wild spaces and are proud to say our bikes are truly Built for the Backcountry. That means they are designed and built on three tenets:
Durability
We build our titanium hardtails from seamless, double-butted 3/2.5 Titanium for the utmost in durability.
This tubeset provides a greater strength to weight ratio than other Titanium frames on the market, engineered specifically for its application. Titanium is corrosion-proof, so you can ride through any weather, for life.
Geometry
With specific geometry to suit the riders needs for each different model, we have designed and developed a quick and responsive ride quality for the new Japhy. Utilizing size specific headtubes and shorter and steeper seat tubes we have given this bike a more playful trailbike feel that will make you want to throw it around the corners and pop off every little bump in the trail.
Ride Quality
Titanium is legendary for an almost mystically smooth, fatigue-reducing ride quality. The custom drawn, seamless, and butted tubeset is tuned to each size, which gives it more compliance and is lighter weight while also increasing torsional rigidity and overall strength.
Geometry
| S0/XS | S1/SM | S2/MD | S3/LG | S4/XL | |
| A - Effective TT Length | 570 | 581 | 611 | 634 | 658 |
| B - Reach | 402 | 420 | 450 | 470 | 490 |
| C - Wheelbase | 1105 | 1125 | 1155 | 1176 | 1201 |
| D - CS Length | 425-437 | 425-437 | 425-437 | 425-437 | 425-437 |
| F - ST Angle | 75 | 75 | 75 | 75 | 75 |
| G - ST Length | 350 | 380 | 435 | 485 | 530 |
| H - HT Angle (30% sag) | 67.6 | 67.6 | 67.6 | 67.6 | 67.6 |
| H - HT Angle (0% sag) | 65.6 | 65.6 | 65.6 | 65.6 | 65.6 |
| I - HT Length | 95 | 100 | 105 | 115 | 130 |
| J - Fork Offset | 51 | 51 | 51 | 51 | 51 |
| K - Fork Length (30% sag) | 492 | 492 | 492 | 492 | 492 |
| BB Drop | 60 | 60 | 60 | 60 | 60 |
| Stack | 586 | 598 | 603 | 612 | 626 |
| Rider Height | 4'11"- 5'3" | 5'2"- 5'7" | 5'6"- 5'11" | 5'10"- 6'2" | 6'1"+ |
| Standover (0% sag) | 716 | 735 | 768 | 808 | 830 |
| Max Insertion | 180 | 189 | 239 | 289 | 335 |
Hardtail geometry based on 30% fork sag. To see a complete Esker size guide go to Esker FAQ >> Size Guide
Frame Specs
| Frame Material | Seamless, butted and cold-shaped 3/2.5 titanium |
| Weight | - Weight includes dropouts, axle, seat collar, and cable guides |
| Frame Includes | Seatpost collar, rear axle, sliding 148mm dropout, Wolftooth Components headset |
| Headtube Diameter | 44mm ID, 50mm OD |
| Rear Dropout Spacing | 148mm |
| BB Type | Threaded 73mm English |
| Headset Lower Stack Height | 13mm |
| Tire Size | |
| Seatpost | 34.9 clamp, 31.6 post, internally routed |
| Thru Axle | Boost 148 / 174mm / M12x1.75” |
| Max Chainring | 34t round / 32t oval / Boost Chainline |
| Brake Mount | Shimano mount for 160mm: SM-MA-F160P/S or SM-MA-R140P/S - SRAM mount for 160mm: 0mm IS disc brake adapter |