Japhy was born out of the desire to ride everything from the backyard to the backcountry. It is designed and built to satisfy your adventurous side, and is equally at home on your favorite flow trail or an overnight epic. Japhy is the hardtail you reach for no matter what the ride ahead promises.

Taking what we learned with Hayduke, Japhy is designed around modern frame geometry and custom steel tubing for a playful and responsive character out on the trail.

With a 120mm fork and clearance up to 29x2.8, Japhy is ready to take on everything from backyard flow trails to backcountry singletrack.

Japhy uses a custom drawn, externally tapered, seamless, quadruple butted, heat treated 4130 cromoly tubeset that is specific to each frame size—making for a better quality frame while reducing weight and cost for the rider.

The versatile Portage dropout system was designed for riders to easily switch drivetrain types, hub widths, and chainstay lengths. Set it up how you like, and hit the trail.

"The Japhy really comes alive on rough trails and chunky roads. While zipping along at speed, the Japhy skims effortlessly through rock gardens, roots, and rutted-out trails."

- Bikepacking.com

"Japhy is scrappy and is willing to claw its way through just about anything...The Japhy is a veritable ally for whatever you can throw at it."

- The Radavist

"It will pick up speed well, and it will shred, and it doesn't feel heavy going uphills... This bike is for someone that wants a really nice ride feel. It rides real comfortable."

- Hardtail Party

Geometry

	S	M	L	XL
A - Effective TT Length	582	618	640	660
B - Reach	420	450	470	490
C - Wheelbase	1141	1171	1195	1215
D - CS Length	425-437	425-437	425-437	425-437
F - ST Angle	75	75	75	75
G - ST Length	380	410	450	490
H - HT Angle	66	66	66	66
I - HT Length	100	100	110	110
J - Fork Offset	51	51	51	51
K - Fork Length	492	492	492	492
BB Drop	65	65	65	65
Stack	604	604	614	614
Rider Height	5'2"- 5'7"	5'6"- 5'11"	5'10"- 6'2"	6'1"+
Standover (at 0% sag)	735	742	774	800
Max Insertion	205	220	260	300

Hardtail geometry based on 30% fork sag. To see a complete Esker size guide go to Esker FAQ >> Size Guide

FRAME Specs


Frame Material	Custom drawn tapered seamless, quadruple butted, heat treated 4130 cromoly. Electrophoretic deposition coating inside and out for rust protection.
Thru Axle	Boost 148 / 174mm / M12x1.75”
Frame Includes	Seatpost collar, rear axle, sliding 148mm dropout, Wolftooth Components headset
Headtube Diameter	44mm ID, 50mm OD
Rear Dropout Spacing	148mm or 142mm
BB Type	Threaded 73mm English
Headset Lower Stack Height	13mm
Wheel Size	29x2.3-2.8. Max tire clearance is 2.8 in the forward position, and 3.0 in the rearward position.
Seatpost	34.9 clamp, 31.6 post, internally routed
Max Chainring	34t round / 32t oval / Boost Chainline
Weight	SM - 2584g, MD - 2662g, LG - 2755g, XL - 2813g - Weight includes dropouts, axle, seat collar, and cable guides
Brake Mount	Shimano mount for 160mm: SM-MA-F160P/S or SM-MA-R140P/S - SRAM mount for 160mm: 0mm IS disc brake adapter

Build Specs

Build	J1	J2	J3
Frame	Japhy	Japhy	Japhy T
Fork	Marzocchi Z2 29/120mm	MRP Raven 29/120mm	Fox Factory 34 Grip2 29/120mm
Headset	Wolf Tooth Components, ZS44/EC44	Wolf Tooth Components, ZS44/EC44	Wolf Tooth Components, ZS44/EC44
Spacers	30mm	30mm	30mm
Stem	RF Aeffect R 50mm	RF Aeffect R 50mm	I9 A35/50mm
Handlebar	RF Chester 35x780	RF Turbine R 35x800	RF Next R 35x800
Grips	SDG Thrice	SDG Thrice	SDG Thrice
Brakes	Shimano Deore 4-Piston	Shimano SLX 4-piston	Shimano XT 4-piston
Rotors	Shimano RT6 180mm	Shimano RT6 180mm	Shimano RT8 180mm
Dropper/Lever	SDG Tellis / SDG Lever S: 150mm - M/L/XL: 170mm	SDG Tellis / Wolf Tooth Remote S: 150mm - M/L/XL: 170mm	Fox Factory / Wolf Tooth Remote S: 150mm - M/L/XL: 170mm
Saddle	SDG	SDG	SDG
Wheels	Stans Flow S2 Comp 29	Stans Flow S2 Comp 29	Industry Nine 1/1 Enduro S
Drivetrain	Deore 12spd, 10-51	GX 12spd, 10-52	XT 12spd, 10-51
Cranks	Deore	GX	XT
Tires	Schwalbe Nobby Nic 29x2.6	Schwalbe Nobby Nic 29x2.6	Schwalbe Nobby Nic 29x2.6