25 SLX BFS
Shimano2025

Shimano 25 SLX BFS Tuning

Tuning Specs
Handle bore 7x4
Spool bearing sizes 3x7x3 | 3x7x3
Recommended bearing class Apex
These sizes are precisely tailored to the reel — we’ve deliberately hidden the others so you can find the right tuning parts straight away.
Recommended knob sizes
18–20 mm21–24 mm25–27 mm
Recommended handle lengths
70–85 mm90–105 mm
Let’s tune your reel
Available variants
XG R
XG L

Matching tuning parts for your SLX

Recommended for your SLX
  • LEGENDARY  ★ 100+
  • NEW
RL - Angelrollentuning - APEX Spulenlager Set für Shimano SLX - SLX 25 BFS - RL-TNG APEX spool bearings with S30 ceramic balls, ABEC 9
  • STAR PRODUCT  ★ 50+
  • NEW
RL - Angelrollentuning - EDGE Spulenlager Set für Shimano SLX - SLX 25 BFS - Mit Abdeckung - RL-TNG EDGE Spool Bearing Set open without shield: two hybrid ceramic ball bearings
  • POPULAR  ★ 20+
  • NEW
RL - Angelrollentuning - CORE Spulenlager Set für Shimano SLX - SLX 25 BFS - RL - Angelrollentuning - RL - TNG Stainless Steel Ball Bearing Set | ABEC 5 | Shimano | 5x11x4 | 3x10x4 - Bundle -
  • LOW STOCK
Two Hedgehog Studio "Kattobi" Tuning Kit ceramic ball bearings (Shimano 730 & 730 Air) shown side by side, each with visible balls in a circular race: ideal premium bearings for your baitcasting reel.
  • SOLD OUT
Two red and silver ball bearings from the Hedgehog Studio "Kattobi" Tuning Kit ball bearings for Shimano 730 & 730 Air BFS are shown side by side on a white background.

The Shimano 25 SLX BFS is the second generation of the SLX BFS line with an aluminum body and a new ultra-super duralumin spool (32 mm diameter, 22 mm width) for the lightest lures. Available only in XG (8.2:1) right and left.

Frequently asked questions about tuning the Shimano 25 SLX BFS

Which spool bearings fit the Shimano 25 SLX BFS?
The Shimano 25 SLX BFS uses spool bearings in 3x7x3 (both spool bearings the same size) (inner × outer × width in mm). You'll find matching tuning spool bearings in exactly this size on this page under the tuning parts.
Which bearing class do we recommend for the 25 SLX BFS?
For the Shimano 25 SLX BFS we recommend APEX, our highest tuning level. It gets the maximum casting distance and smoothness out of the reel and is especially worth it if you cast light lures or want every last bit of performance. The recommendation is based on how this reel is typically used.
Which handle and knobs fit the 25 SLX BFS?
The handle fitting of the Shimano 25 SLX BFS is 7x4 (wrench size × shaft diameter in mm). Every tuning handle with a 7x4 fitting fits directly. Tuning knobs in the sizes shown on this page fit the stock handle and our tuning handles.
Do I need special tools to change the bearings on the 25 SLX BFS?
No. On the Shimano 25 SLX BFS the spool bearings can be changed without a Pin Remover. A suitable screwdriver for the side plate is enough.
Can you install the tuning on my 25 SLX BFS?
Yes. Send us your Shimano 25 SLX BFS, we'll install the tuning parts professionally, clean and oil the reel and send it back ready to fish. You'll find the tuning service via the button above.