Bicycle Archive · Specification report

2026 Jamis Faultline A1 MPX

Velopedia Archive ID 900001533

Overview

Model year	2026
Brand	Jamis
Model	FAULTLINE A1 MPX
Bicycle type	Mountain
Archive ID	900001533
Original MSRP	$3,699.95
Colors	Gloss Black
Sizes	S/15.5″; M/17″; L/19″; XL/21″
Weight	33 lbs

Frameset

Frame construction	Triple-butted 6061 alloy, 125mm suspension travel, 1.5 – 1 1/8” tapered head tube, asymmetrical chainstays w/12x148mm thru-axle dropout, internal dropper post routing, ISCG05 chainguide mount, Fox Float DPS Performance Series EVOL shock w/3-position compression, UDH derailleur hanger
Frame material	Aluminum
Fork	Fox 34 Rhythm Series Float 29″ w/ sweep adjust compression & lock-out,15x110mm axle, air spring compression, rebound adjust, tapered alloy steerer, 130mm travel
Fork material	Aluminum
Rear shock	Fox Float DPS Performance Series EVOL shock w/3-position compression

Drivetrain

Component group	SRAM Eagle 90, 12-speed
Shifters	SRAM Eagle 90, 1×12-speed
Rear derailleur	SRAM Eagle 90, 12-speed
Crankset	SRAM Eagle 90, 32T, 170mm
Bottom bracket	SRAM
Cassette	SRAM 1275, 12-speed, 10-52T
Chain	SRAM T-Type, 12-speed

Brakes

Brakes	SRAM DB8 4-piston hydraulic disc, 180mm rotors

Cockpit & contact points

Headset	FSA Orbit 1.5 Zero-Stack internal cup, 8mm cone spacer
Handlebar	Race Face Ride , 35 x 780mm
Stem	Race Face Ride, 50mm
Saddle	WTB Volt
Seatpost	KS Vantage Adjustable Travel Dropper 110-140mm travel Length: (S), 140-170mm travel Length: (M/L), 170-200mm travel Length: (XL), 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 Agarro 29×2.4″ Trail
Rear tire	Vittoria Agarro 29×2.4″ Trail
Wheel size	29

Geometry · S/15.5″

Effective top tube	575 mm
Head tube	105 mm
Head-tube angle	66°
Seat-tube angle	77°
Chainstay / rear center	445 mm
Wheelbase	1171 mm
Bottom-bracket drop	35 mm
Reach	435 mm
Stack	606 mm
Standover height	716 mm

Geometry · M/17″

Effective top tube	600 mm
Head tube	110 mm
Head-tube angle	66°
Seat-tube angle	77°
Chainstay / rear center	445 mm
Wheelbase	1208 mm
Bottom-bracket drop	35 mm
Reach	460 mm
Stack	611 mm
Standover height	716 mm

Geometry · L/19″

Effective top tube	618 mm
Head tube	120 mm
Head-tube angle	66°
Seat-tube angle	77°
Chainstay / rear center	445 mm
Wheelbase	1227 mm
Bottom-bracket drop	35 mm
Reach	480 mm
Stack	620 mm
Standover height	717 mm

Geometry · XL/21″

Effective top tube	635 mm
Head tube	130 mm
Head-tube angle	66°
Seat-tube angle	77°
Chainstay / rear center	445 mm
Wheelbase	1241 mm
Bottom-bracket drop	35 mm
Reach	500 mm
Stack	645 mm
Standover height	717 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 14, 2026.