Eunorau Specter S 4.0 full suspension fat tire electric bike in Moon Black, side view
Eunorau Specter S 4.0 in Moon Black, front three quarter view with the 140mm suspension fork
Eunorau Specter S 4.0 in Moon Black, rear three quarter view with the rear rack and SRAM NX derailleur
Eunorau Specter S 4.0 in Moon Black, side view from the left
Eunorau Specter S 4.0 full suspension fat tire electric bike in Army Green, side view
Eunorau Specter S 4.0 in Army Green, side view from the left
Eunorau Specter S 4.0 in Army Green, front three quarter view
Eunorau Specter S 4.0 in Army Green, rear three quarter view
Eunorau Specter S 4.0 in Moon Black on a grey studio floor, side view
Eunorau Specter S 4.0 Bafang G510 1000W mid drive motor at the crank
Eunorau Specter S 4.0 140mm Explorer suspension fork and AO 38RC rear shock
Eunorau Specter S 4.0 SRAM NX 11 speed long cage derailleur and 11 to 42 tooth cassette
Eunorau Specter S 4.0 Kenda Juggernaut 26 x 4.0 inch fat tire
Eunorau Specter S 4.0 four piston hydraulic brake caliper on a 180mm front rotor
Eunorau Specter S 4.0 Bafang color display showing speed, battery, trip and assist mode
Eunorau Specter S 4.0 aluminum rear rack above the fat rear tire
Eunorau Specter S 4.0 wide Eunorau Comfort C7 saddle
Eunorau Specter S 4.0 full suspension fat tire electric bike in Moon Black, side view
Eunorau Specter S 4.0 in Moon Black, front three quarter view with the 140mm suspension fork
Eunorau Specter S 4.0 in Moon Black, rear three quarter view with the rear rack and SRAM NX derailleur
Eunorau Specter S 4.0 in Moon Black, side view from the left
Eunorau Specter S 4.0 full suspension fat tire electric bike in Army Green, side view
Eunorau Specter S 4.0 in Army Green, side view from the left
Eunorau Specter S 4.0 in Army Green, front three quarter view
Eunorau Specter S 4.0 in Army Green, rear three quarter view
Eunorau Specter S 4.0 in Moon Black on a grey studio floor, side view
Eunorau Specter S 4.0 Bafang G510 1000W mid drive motor at the crank
Eunorau Specter S 4.0 140mm Explorer suspension fork and AO 38RC rear shock
Eunorau Specter S 4.0 SRAM NX 11 speed long cage derailleur and 11 to 42 tooth cassette
Eunorau Specter S 4.0 Kenda Juggernaut 26 x 4.0 inch fat tire
Eunorau Specter S 4.0 four piston hydraulic brake caliper on a 180mm front rotor
Eunorau Specter S 4.0 Bafang color display showing speed, battery, trip and assist mode
Eunorau Specter S 4.0 aluminum rear rack above the fat rear tire
Eunorau Specter S 4.0 wide Eunorau Comfort C7 saddle
Eunorau

Eunorau Specter S 4.0 Hunter X9 Electric Hunting Bike | 1000W Mid Drive, Full Suspension

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Every Eunorau can come back within 7 days of delivery, as long as it has not been assembled or ridden and is repacked in its original box with every accessory and manual. Ask us before you ship and we set it up with Eunorau.

Motor and battery backed for two years

Eunorau covers the motor, battery and electrical parts for 24 months, for the original owner. We are an authorized dealer, so the warranty is the real one.

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Full Manufacturer Backing: Eunorau. Every Eunorau we sell is backed by Eunorau’s own 24 month warranty, from the day it is delivered to the original owner. We are an authorized dealer, so it is the real one.

  • 10 years, frame.
  • 24 months, motor.
  • 24 months, battery.
  • 24 months, electrical components. Display, controller, throttle, lights and wiring.

Not covered: wear parts such as brake pads, rotors, spokes, grips, cables, tires, tubes and chains; crash damage, stunt riding, racing and misuse; damage from abnormal exposure to liquid; the wrong charger; and parts not approved by Eunorau.

Keep it valid. Eunorau asks you to register the bike right after purchase and to have it checked by a Eunorau specialist or dealer after the first year of use. We walk you through the registration when your order ships.

Shipping damage. Be there to sign for the delivery, check the box before you sign, and tell us right away with photos of the bike and the box. Keep all the packaging until the claim is settled.

Returns. 7 days from delivery. The bike must be unassembled, unridden and repacked in its original box with every accessory and manual. Ask us first and we set the return up with Eunorau.

Claims. Email support@belcopia.com with your order number, a description and photos, and we handle it with Eunorau for you.

1000WBafang G510 mid drive
140mmFront travel, 50mm rear
40 miRange, Eunorau figure
11 speedSRAM NX, 11 to 42 tooth
17.5Ah48V removable battery, LG cells
300 lbMax payload, rider and cargo
FeaturesSizeSpecsCompare
Eunorau Specter S 4.0

Eunorau Specter S 4.0 Overview

The Eunorau Specter S 4.0, also sold as the Hunter X9, is a full suspension fat tire electric bike with a 1000W Bafang G510 mid drive. The motor turns the chain, so it works through the SRAM NX 11 speed gears and their 11 to 42 tooth cassette, and a thumb throttle adds power without pedaling.

An Explorer fork with 140mm of travel and an AO 38RC rear shock with 50mm keep the 26 x 4.0 inch Kenda tires following the ground, and four piston hydraulic brakes on 180mm rotors stop it. The removable 48V 17.5Ah battery of LG cells is good for up to 40 miles by Eunorau's figure.

Eunorau sets it up as a Class 2 electric bike. It comes in a 16 or 18 inch frame, in Moon Black or Army Green, with a rear rack and full fenders, and carries up to 300 lb of rider and cargo.

Built to be lived with

A 6061 aluminium full suspension frame in a 16 or 18 inch size, an Explorer fork, an AO 38RC rear shock and 26 x 4.0 inch Kenda tires on single wall aluminium rims with stainless spokes. The bike is 79.7 inches long and weighs 83.7 lb.

SRAM NX 11 speed gearing, a Bafang color display, a 700mm riser bar, a rear rack and full aluminium fenders. Eunorau covers the motor, battery and electrical parts for 24 months and the frame for 10 years.

CLIMBS IN THE RIGHT GEAR

The Bafang G510 is a 1000W mid drive: it turns the chain, so its power runs through the SRAM NX 11 speed gears. Drop to the 42 tooth cog on a steep climb and the motor works through that low gear; shift up for the flats.

The motor sits low in the middle of the frame, which keeps its weight centred, and a shift sensor cuts the assist for a moment during each gear change to ease the load on the chain. A thumb throttle adds power without pedaling.

CLIMBS IN THE RIGHT GEAR

SMOOTH OVER ROOTS AND RUTS

An Explorer fork with 140mm of travel and 36mm stanchions works up front, and an AO 38RC shock gives the rear 50mm. Together they keep the wheels following uneven ground and take the sting out of broken pavement, gravel and trail, per Eunorau.

Kenda 26 x 4.0 inch fat tires add a wide contact patch on loose and uneven surfaces, and four piston hydraulic brakes on 180mm rotors stop the bike front and rear.

SMOOTH OVER ROOTS AND RUTS

CHARGE IT INDOORS

The 48V 17.5Ah battery of LG cells locks into the down tube and lifts out, so it can charge in the house while the bike stays in the truck or the shed. Eunorau rates it at up to 40 miles.

The bike weighs 83.7 lb and Eunorau rates it for 300 lb of rider and cargo. An aluminium rear rack and full aluminium fenders come with it.

CHARGE IT INDOORS

Key features

Four Piston Brakes

Four Piston Brakes

HD E620 four piston hydraulic brakes on 180mm rotors, front and rear.

SRAM NX 11 Speed

SRAM NX 11 Speed

An 11 to 42 tooth cassette and a 40 tooth chainring for climbs and cruising.

Kenda Fat Tires

Kenda Fat Tires

Kenda Juggernaut 26 x 4.0 inch tires with a wide contact patch for loose ground.

Aluminium Rear Rack

Aluminium Rear Rack

An aluminium rack for bags and cargo accessories, on a bike rated for 300 lb of rider and cargo.

What it's made of

Four things that set it apart. Tap through them.

Eunorau Specter S 4.0 Bafang color display showing speed, battery, trip and assist mode

Display

Speed, battery and assist

The Bafang DP C018 color display shows speed, battery level, trip distance and the assist mode, with the assist controls by your thumb.

Eunorau Specter S 4.0 wide Eunorau Comfort C7 saddle

Saddle

Eunorau Comfort C7 saddle

A wide, contoured saddle on a 31.6mm aluminium seatpost, shaped for long days out.

Eunorau Specter S 4.0 in Moon Black, front three quarter view with the 140mm suspension fork

Front end

140mm of travel up front

The Explorer fork runs 36mm stanchions and 140mm of travel, under a full aluminium fender and a front light with a reflector.

Eunorau Specter S 4.0 in Army Green, side view from the left

Frame sizes

16 or 18 inch frame

Both frames share the reach, stack, top tube, wheelbase and length. The 18 inch frame adds 2 inches of seat tube and of saddle height.

Size and dimensions

A seat tube 16 in (16 inch frame) or 18 in (18 inch frame) · B reach 18 in · C head tube 6.3 in · D chain stay 16.6 in · E bracket height 14.2 in · F wheelbase 50.2 in · H top tube 25.4 in · I stack 24.3 in · K length 79.7 in. Saddle height 19.3 to 24 in on the 16, 21.3 to 26 in on the 18. Eunorau lists riders 5'3" to 6'3" for the 16 inch frame and has not published a range for the 18.

Eunorau Specter S 4.0 geometry diagram: seat tube, reach, head tube, chain stay, bracket height, wheelbase, top tube, stack and length

Technical specs and dimensions

Motor Bafang G510 mid drive, 48V 1,000W
Throttle Thumb throttle
Class Class 2 by default, per Eunorau
Shift sensor Cuts the assist for a moment during each shift
Battery 48V 17.5Ah, removable, lockable, LG cells
Range Up to 40 miles (64 km), Eunorau figure
Display Bafang DP C018 color display
Frame 6061 aluminium, full suspension
Frame sizes 16 in or 18 in
Fork Explorer, 140mm travel, 36mm stanchions
Rear shock AO 38RC, 190mm eye to eye, 50mm travel
Drivetrain SRAM NX 1 x 11, trigger shifter, long cage derailleur
Cassette SRAM PG 1130, 11 to 42 tooth
Chain KMC e11 Sport
Chainring 40 tooth, 170mm aluminium cranks
Brakes HD E620 four piston hydraulic, 180mm rotors front and rear
Tires Kenda K1151, 26 x 4.0 in
Rims 6061 aluminium, single wall
Spokes 304 stainless steel
Handlebar 700mm aluminium riser, 25mm rise
Stem 90mm aluminium
Seatpost 31.6 x 280mm aluminium
Saddle Eunorau Comfort C7
Pedals 9/16 in platform, with reflectors
Lights Front light and rear light, with reflectors
Rack Aluminium rear rack
Fenders Full aluminium, front and rear
Kickstand Adjustable aluminium
Max payload 300 lb (136kg), rider and cargo
Weight 83.7 lb (38kg)
Seat tube 16 in (406mm) or 18 in (457mm)
Saddle height 19.3 to 24 in on the 16; 21.3 to 26 in on the 18
Rider height 5'3" to 6'3" on the 16 in frame, per Eunorau; not published for the 18
Reach 18 in (457mm)
Stack 24.3 in (618mm)
Top tube 25.4 in (645mm)
Head tube 6.3 in (160mm)
Chain stay 16.6 in (421.5mm)
Bracket height 14.2 in (360mm)
Wheelbase 50.2 in (1274mm)
Length 79.7 in (2024mm)
Colours Moon Black, Army Green

WHAT'S IN THE BOX

The Specter S 4.0

Eunorau posts assembly videos for the last steps. The bike weighs 83.7 lb, so have a second person to lift it.

Battery And Charger

The removable 48V 17.5Ah LG cell battery and a charger.

Rack And Fenders

An aluminium rear rack and full aluminium fenders, front and rear, included.

Questions before buying

Is this the same bike as the Hunter X9?

Yes. Eunorau lists it as the Specter S 4.0 and as the Hunter X9; it is one bike with one spec.

16 or 18 inch frame?

The two frames share the reach, stack, top tube, wheelbase and length. The 18 inch frame has a 2 inch longer seat tube and a saddle range 2 inches higher: 21.3 to 26 inches against 19.3 to 24. Eunorau lists riders 5'3" to 6'3" for the 16 inch frame and has not published a range for the 18, so taller riders who want more saddle height should pick the 18. Between sizes? Ask us before you order.

Why a mid drive on a hunting bike?

The Bafang G510 turns the chain, so it works through the 11 gears: a low gear for a steep climb with gear on the rack, a high gear for the flats. Its weight sits low in the middle of the bike, per Eunorau.

How far does it go?

Eunorau rates it at up to 40 miles on the 48V 17.5Ah battery. Rider and cargo weight, hills, soft ground, cold weather and heavy throttle use all bring it down.

Is it street legal?

Eunorau sets it up as a Class 2 electric bike: pedal assist plus a throttle, with the motor helping up to 20 MPH. Most states treat Class 2 like a bicycle, but rules vary by state, town and land manager, so check before you ride roads, paths or public hunting ground.

How much can it carry?

Eunorau rates it for 300 lb in total, rider and cargo. The aluminium rear rack takes bags and cargo accessories.

Is the battery removable?

Yes. The 48V 17.5Ah battery of LG cells locks into the down tube and lifts out, so it can charge indoors while the bike stays in the truck or the shed.

Does it arrive assembled?

Not fully. Eunorau posts assembly videos for the last steps. The bike weighs 83.7 lb, so have a second person there to lift it out, and photograph any box damage before you unpack.

What is the warranty?

Eunorau covers the motor, battery and electrical parts for 24 months and the frame for 10 years, for the original owner. Wear parts such as brake pads, rotors, tires, chains and grips are not covered, and neither are crashes, stunt riding or racing. Eunorau asks you to register the bike right after purchase and to have it checked by a Eunorau dealer after the first year. We are an authorized dealer, so the warranty applies.

Moon Black or Army Green?

Same bike, same price. Moon Black is a dark blue grey; Army Green is an olive green that sits well in the woods. Both come in the 16 and 18 inch frame.

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