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The Fatfish Grime Fat Tyre E-Bike is a purpose-built all-terrain electric bike designed for riders who want serious performance without compromising on comfort or practicality. At its core is a Fatfish custom-tuned high-torque 190 mm extra-large motor delivering 250 W of power, paired with a 52 V 20 Ah battery built with premium 21700 Samsung cells for reliable, long-lasting performance. Power delivery is managed by a 52 V high-performance brushless motor controller, with two Hall 24 magnetic cadence sensors ensuring smooth and responsive pedal assist.
The Grime's suspension setup is built for confidence on rough terrain. A 20-inch double shoulder front fork with adjustable rebound and compression handles the bumps up front, while the fully adjustable rear suspension with custom shock bumper keeps things planted at the back. Combined with 20" x 5.00" fat tyres, you get maximum stability, traction, and all-terrain control in any condition. Shifting is handled by a Shimano Tourney FT 7-speed derailleur with Rapidfire Plus lever, a 52T chainwheel, and 160 mm cranks for efficient power transfer and better stability on any surface.
Comfort and convenience are well covered with the Fatfish Signature Dual Passenger Flat Seat with high-grip texturised fabric, a wide custom-bend handlebar to reduce wrist stress, Fatfish footpegs, standard pedals with reflectors, and 20-inch front and rear mud flaps. Stopping power comes from 4-piston hydraulic brakes with a motor cut-off function and a 203 mm double-thickness rotor, while a high-quality load-bearing kickstand and a heavy-duty cargo rack supporting up to 25 kg make the Grime a capable everyday companion.
Visibility and control are fully covered with a vintage-style headlight powered by the main battery, rear tail lights with turn signals, and a C900 LCD console featuring a parental lock to password-protect motor output and top speed, giving riders and parents alike full peace of mind on every ride.
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Let us know what you’re looking for — or visit us in-store and we’ll walk you through 5 simple questions to match you with your perfect ride:
Yes — all sales include a 12-month parts warranty. Labour time is not included, but we’re always happy to assist with service and repairs and can work with our suppliers for after sales support to ensure you feel safe and secure on your new wheels.
No bookings required — just drop in!
We’ll help you test ride multiple bikes or discuss options that suit your needs.Tip: Call ahead or message us first to confirm availability of the specific model you’re after.
We stock Australia’s largest range, including:
Don’t see what you want? Ask our team, and we’ll be able to source it!
All bikes are fully supported and serviceable by our in-house mechanics.
Yes! If your bike is in stock, we’ll assemble and prep it so you can ride straight out the door upon payment.
Between 30 – 115 km depending on:
Ask our friendly staff or look at the specs of the bike your after for more info! We’re happy to help.
Yes — we deliver locally across Sydney and can ship nationally for a delivery fee.
We also partner with supporting stores across Australia to assist with assembly where possible.
Absolutely. Our mechanics have 15 + years’ experience and are among the most qualified in the country.
Yes — your first service is free!
We’re also always available to provide ongoing maintenance, tune-ups, repairs, and support to keep your bike running perfectly as part of our workshop department.
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