Shimano Kairiki 4 Braid
Diameter chart, reel capacity & backing guide
Kairiki 4 is Shimano's four-strand PE braid with VT Construction. This guide covers the European range, with package lengths listed in meters. Compare the selected diameter, choose a useful working length and calculate the backing needed underneath it.
- Construction
- Four-strand PE braid with VT Construction
- Listed strengths
- 6-50 lb
- Line type
- Braid main line
Is Kairiki 4 right for your setup?
Kairiki 4 is a four-strand braid main line available in filler and bulk lengths. Consider the smaller packages for an individual reel and the bulk supply for repeated fills. Choose strength for the tackle and cover, then use the listed diameter to check the working length and backing needed; the package lengths in this guide are specified in meters.
How much Kairiki 4 will fit?
Calculated estimates, not measured fills. Stop at the reel manufacturer's fill level even if some line remains.
Shimano Kairiki 4 diameter chart
European product table with its published pound-column labels. Diameter and length are metric; inches and yards converted. Package availability varies by strength and color.
| Strength | Inches | mm | Spools (m / yd) |
|---|---|---|---|
| 0.002362 | 0.060 | 150 m (about 164.04 yd), 300 m (about 328.08 yd), 3000 m (about 3280.84 yd) | |
| 0.003937 | 0.100 | 150 m (about 164.04 yd), 300 m (about 328.08 yd), 3000 m (about 3280.84 yd) | |
| 0.005118 | 0.130 | 150 m (about 164.04 yd), 300 m (about 328.08 yd), 3000 m (about 3280.84 yd) | |
| 0.006299 | 0.160 | 150 m (about 164.04 yd), 300 m (about 328.08 yd), 3000 m (about 3280.84 yd) | |
| 0.00748 | 0.190 | 150 m (about 164.04 yd), 300 m (about 328.08 yd), 3000 m (about 3280.84 yd) | |
| 0.007874 | 0.200 | 150 m (about 164.04 yd), 300 m (about 328.08 yd), 3000 m (about 3280.84 yd) | |
| 0.008465 | 0.215 | 150 m (about 164.04 yd), 300 m (about 328.08 yd), 3000 m (about 3280.84 yd) | |
| 0.009055 | 0.230 | 150 m (about 164.04 yd), 300 m (about 328.08 yd), 3000 m (about 3280.84 yd) | |
| 0.011024 | 0.280 | 150 m (about 164.04 yd), 300 m (about 328.08 yd), 3000 m (about 3280.84 yd) | |
| 0.012402 | 0.315 | 150 m (about 164.04 yd) |
Choosing your Kairiki 4 strength
The official table pairs 10 lb with .13 mm, 15 lb with .16 mm, and 20 lb with .20 mm. The starting catalog's values should be replaced only with these exact verified rows.
The intermediate 18 and 25 lb entries are actual table labels. Do not round them to 20 or 30 lb or relabel the corresponding existing IDs.
The 50 lb .315 mm row is verified only as a 150-meter Multi Color product code in this source. Bulk lengths from lighter strengths cannot be assigned to it.
Specification-based guidance, not a hands-on Kairiki 4 test. Capacity results are estimates, not measured fills.
Want a guided recommendation?
Continue in the Setup WizardSame pound test, different diameters
At your selected strength
Loading diameter comparisons...
What changes with another line?
Nearby diameters in the line database
| Line | Strength | Inches | Difference |
|---|---|---|---|
| Loading line database... | |||
Backing, working line & leaders
Keep metric packages intact
150 meters is about 164.04 yards and 300 meters is about 328.08 yards. Retail links should retain the meter package identity rather than advertise a fabricated 150-yard spool.
Choose bulk deliberately
A 3,000-meter package is a multi-reel supply where verified. Divide it by required working lengths and reserve, not by the pound labels alone.
Separate title strength from table labels
This regional table labels its pound column as average strength, while some product titles give different kilogram figures. The page reports the exact table labels and makes no independent breaking-strength guarantee.
How Much Fits on These Reels?
Estimated full-spool capacity for the Kairiki 4 strength selected above, with no backing. These are calculated examples, not physical tests or recommendations for every pairing.
Loading capacity estimates...
Kairiki 4 questions, answered
Is Kairiki 4 the same as Kairiki 8?
No. The carrier count and product identity differ. This guide uses Kairiki 4 package listings only.
Does 300m mean 300yd?
No. It is about 328.08 yards. The converted value is a calculation aid, not a second package option.
Why are 18 and 25 lb included?
They are explicit pound values in Shimano's European specification table. They have not been rounded to more familiar labels.
Specifications & sources
Checked 2026-09-13. Exact en-GB product table used, with manufacturer-published lb values preserved. Higher kg figures in product titles are not used to relabel these pound-test entries.
Calculations use the catalog's listed inch diameters. Published inch and millimeter values may differ slightly because of rounding.
- Shimano official product evidence 1 Exact model identity and manufacturer specifications; reviewed 2026-09-13.