Bicycle Archive · Specification report

2026 Jamis Defcon E1

Velopedia Archive ID 900001534

Overview

Model year	2026
Brand	Jamis
Model	DEFCON E1
Bicycle type	Electric-assist
Archive ID	900001534
Original MSRP	$7,499.95
Colors	Galactic
Sizes	S; M; L; XL

Frameset

Frame construction	Triple-butted 6061 alloy, 150mm Horst Link suspension travel, 1.5 – 1 1/8” tapered head tube, 12x148mm thru-axle dropout, Fox Float X Performance Series EVOL shock w/3-position compression, UDH derailleur hanger
Frame material	Aluminum
Fork	Fox 36 Performance Series Float 29″ w/adjust compression & lock-out,15x110mm axle, air spring compression, rebound adjust, tapered alloy steerer, 160mm travel
Fork material	Aluminum
Rear shock	Fox Float X Performance Series EVOL shock w/3-position compression

Drivetrain

Component group	Shimano XT, 12-speed
Shifters	Shimano XT, 1×12-speed
Rear derailleur	Shimano XT, 12-speed
Crankset	Shimano EM600, 34T, 160mm
Cassette	Shimano M8100, 12-speed, 10-51T
Chain	KMC X12, 12-speed

Brakes

Brakes	TRP DH-R EVO 4-piston hydraulic disc, 203mm rotors

Cockpit & contact points

Headset	FSA Orbit IS Integrated, 8mm cone spacer
Handlebar	Race Face Aeffect R, 780mm x 20mm rise, 35mm diameter
Stem	Race Face Aeffect R, 40mm extension, 35mm clamp diameter
Saddle	WTB Rocket
Seatpost	KS Vantage adjustable Dropper 30.9mm, Westy 2.0 remote

Wheels & tires

Wheels	Stan’s No Tubes Flow D rims, Novatec D791SB 15x110mm front & D902SB 12x148mm rear hubs, stainless spokes
Front tire	Vittoria Mazza 29×2.4″ Enduro
Rear tire	Vittoria Mazza 29×2.4″ Enduro
Wheel size	29

E-bike system

Motor	Shimano DU-EP801
Battery	Shimano BT-EN806, 630Wh

Geometry · S

Effective top tube	590 mm
Head tube	130 mm
Head-tube angle	64.5°
Seat-tube angle	76°
Chainstay / rear center	455 mm
Wheelbase	1236 mm
Bottom-bracket drop	25 mm
Reach	431 mm
Stack	639 mm
Standover height	788 mm
Fork offset / rake	44 mm

Geometry · M

Effective top tube	615 mm
Head tube	130 mm
Head-tube angle	64.5°
Seat-tube angle	76°
Chainstay / rear center	455 mm
Wheelbase	1261 mm
Bottom-bracket drop	25 mm
Reach	456 mm
Stack	639 mm
Standover height	788 mm
Fork offset / rake	44 mm

Geometry · L

Effective top tube	640 mm
Head tube	130 mm
Head-tube angle	64.5°
Seat-tube angle	76°
Chainstay / rear center	455 mm
Wheelbase	1286 mm
Bottom-bracket drop	25 mm
Reach	481 mm
Stack	639 mm
Standover height	788 mm
Fork offset / rake	44 mm

Geometry · XL

Effective top tube	665 mm
Head tube	135 mm
Head-tube angle	64.5°
Seat-tube angle	76°
Chainstay / rear center	455 mm
Wheelbase	1312 mm
Bottom-bracket drop	25 mm
Reach	506 mm
Stack	643 mm
Standover height	794 mm
Fork offset / rake	44 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 13, 2026.