Shimano Tiagra 50AX vs Shimano 21 Sustain 4000 FJX

The selected categories are different, score metrics vary from category to another.

Shimano Tiagra

Multireels

82.90 out of 100

Value for money3.5 out of 5

Quality classExcellent

Durability9.5 out of 10

Ergonomics3.4 out of 10

Gear ratio3.1:1

Maximum drag12kg / 26.46lbs

Weight2365g / 83.42oz

Line retireve per crank93 centimeter / 36.61 inch

Ball bearings4

Technical Specifications

BrandSHIMANO
The main category of the reelMultireels
Price range~ €633.33
Is saltwater resistantYes
Spare spoolNo
Reel size50A
Handle typeSingle handle
Drag typeLever drag
Handle orientationRight
Line capacity monofil-

Shimano 21 Sustain

Spinning

93.60 out of 100

Value for money5 out of 5

Quality classExcellent

Durability9.5 out of 10

Ergonomics6.08 out of 10

Gear ratio5:3:1

Maximum drag11kg / 24.25lbs

Weight275g / 9.7oz

Line retireve per crank87 centimeter / 34.25 inch

Ball bearings9

Technical Specifications

BrandSHIMANO
The main category of the reelSpinning
Price range~ €215.33
Is saltwater resistantYes
Spare spoolNo
Reel size4000 FJ
Handle typeSingle handle
Drag typeFront drag
Handle orientationLeft, Right
Line capacity monofilmm/meter: 180/1.8

Conclusion

Shimano 21 Sustain 4000 FJX edges out Shimano Tiagra 50AX with slightly better overall performance, especially on the weight (275g / 9,7oz) and the ergonomics (6.08 out of 10). Still, Shimano Tiagra 50AX holds its own with strengths like a ball bearings of 4 and a line retrieve per crank of 93 centimeter / 36.61 inch, making it a solid choice depending on your preferences and fishing needs.

What's the difference between Shimano Tiagra and Shimano 21 Sustain?

Shimano Tiagra 50AX

With premium bearings scoring 5 out of 10 (4), this reel delivers buttery smooth operation even with load

Shimano 21 Sustain 4000 FJX

Thanks to its 6.33 out of 10 (5:3:1) gear ratio, the reel offers a strong balance between torque and quick retrieval
With a score like 8.17 out of 10 (275g / 9,7oz), the reel feels light in the hand.. ideal for active techniques like twitching, jigging, or topwater.