AJS Isaba 125


AJS Isaba 125

Define your own style. Create your own identity.  Ride… your way.

The Isaba is named after the beautiful town in northern Spain, located in the province of Navarre in the Pyrenees.

The AJS Isaba has a unique design which is beautifully asymmetric, and yet in perfect harmony.  You will love the feeling of being free and released from the stresses of traffic congestion. This easy, fun to ride motorcycle will liberate you and quickly become your new best friend.
Where will your adventure take you?

Two years parts & labour warranty

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AJS Isaba 125

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AJS Isaba 125

AJS Isaba 125

AJS Isaba 125







Technical Details

Engine type: 4-stroke, OHC, air cooled, single cylinder
Displacement: 124.5cm³
Bore x Stroke: 57mm x 48.8mm
Compression ratio: 9.3:1
Max. power: 8.00kW @ 9,500 rpm
Max. torque: 8.72Nm @ 8,000 rpm
Fuel system: Electronic Fuel Injection - Rongmao YB05
Tank capacity: 13L
Fuel type: Unleaded or E5 petrol
Transmission: five speed, chain drive
Front sprocket: 14T 428
Rear sprocket: 48T 428
Unladen Mass: 136kg
Max laden mass: 276kg
Max load: 140kg
Starter: Electric
Gear ratios:
Gear 1 - 35.394
Gear 2 - 21.910
Gear 3 - 16.140
Gear 4 - 12.920
Gear 5 - 10.771
Maximum hill starting ability fully laden: 15%
Brakes: Single disc/single disc - Combined Braking System
Front disc: 280mm 4mm thick - 3mm minimum
Rear disc: 240mm 4mm thick - 3mm minimum
Tyres:  Front: 100/80-17 - Rear: 120/70-17
Rim size: Front: 2.50 x 17 - Rear 3.50 x 17
Seat height: 760mm
Length: 1985mm
Width: 745mm
Height: 1075mm
Wheelbase: 1360mm
Turning angle: left/right 40 deg.
Max Speed: (approx): 60mph
Fuel consumption: (as recorded on the COC) 104mpg

Key Features

17 year old learner legal
Drive on CBT or A1 driving licence
Adventure Scrambler style
USD front shocks
Single nitrogen rear shock
Electronic Fuel Injection system
Low seat height
Combined Braking System
24 months AJS parts & labour warranty

Maintenance Information

Tyre pressure - front:     33 psi solo or with passenger (not to exceed 36psi)
Tyre pressure - rear:      33 psi solo or with passenger (not to exceed 36psi)
Tappet clearance In:      0.15mm
Tappet clearance Ex:     0.15mm
Engine oil type:               10w40 Class API, SG (Silkolene Super 4)
Engine oil quantity:       950ml (check in sight glass)
Spark plug type:             NGK CR7HS
Air filter part number:  TY125-X-005-018-E
Oil filter part number:    101-K157-009-013
Front fork oil capacity:    315ml (each leg)
Front fork oil type:          RSF 7.5
Battery:                             12v 9Ah

Torque Settings:

Torque values are based on clean, dry threads.  Reduce value by 10% if threads are oiled before assembly.

Front axle                                       50-80Nm
Rear axle nut                                  50-80Nm
Steering stem centre bolt             55-70Nm
Swinging arm axle nut                    50-80Nm
Rear sprocket bolts                         18-28Nm
Cylinder head bolt M8 x 1.25          15-20Nm
Cylinder block nuts                                10Nm
Spark plug M10 x 1.00                        12.5Nm
Magneto rotor                                 40-50Nm
Clutch nut                                        30-50Nm
Primary drive gear nut                    40-60Nm

General 8.8 or 9.8 fasteners:
M6 10Nm
M8 25Nm
M10 50Nm
M12 85Nm


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