Fast Sinking Fly Line

#5 - #8 6 ips
Price
£19.99

Ideal when you need to get deep, fast.

DENSITY 6 ips Sink Rate
WATER Freshwater
HEAD 36' - 38'
TAPER WF #5 - #8
LEADER CONNECTION Built in Front Welded Loop

Select Your Line Weight: #5

In stock and ready for shipping

Shipping Rates

Shipping Information

What to Expect After You Place Your Order

Here’s how it works, step by step, from placing your order to receiving it at your door:

  • Place your order online – Add your items to the basket and complete checkout.

  • Important: It is extremely important to make sure your email address is correct and spelt accurately. Only use one email address on your order and when contacting us. Using multiple email addresses may interfere with tracking updates and could affect delivery guarantees.

  • Order confirmation – You’ll immediately receive a confirmation email with the details of your order.

  • Dispatch confirmation – Once your order has been packed and shipped, we’ll send you another email with tracking information so you can follow your parcel’s journey.

  • Delivery to your door – You’ll be able to monitor progress using the tracking link until your parcel arrives.

If you don’t receive a confirmation or tracking email, please check your junk folder or contact us to make sure your email address was entered correctly.


UK Shipping

Orders must be placed before 3pm Monday - Thursday to receive the parcel the next working day (subject to Royal Mail 95% success rate).  Orders placed on Fridays will be delivered the following Monday. Next day delivery is not available on Saturday, Sunday or bank holidays. 

Orders placed after 3pm or during weekends/bank holidays will be processed the next working day.

Next Day Delivery is not available on Saturday, Sunday or UK Bank Holidays.

Order Value Shipping Method Price
£100.00 and up Tracked 1st Class Free
£30.00 – £99.99 Tracked 1st Class £3.99
£0.00 – £29.99 Tracked 1st Class £2.49


European Shipping

Estimated delivery time: 3 – 5 working days

Order Value Shipping Method Price
£100.00 and up 3 – 5 Days Tracked Free
£0.00 – £99.99 3 – 5 Days Tracked £5.99


Rest of World

Estimated delivery time: 7 – 10 working days

Order Value Shipping Method Price
£100.00 and up 7 – 10 Days Tracked Free
£0.00 – £99.99 7 – 10 Days Tracked £7.99

 

Free shipping applies to orders totalling £100 GBP or more. This is based on the UK pound sterling value at checkout, not the equivalent in other currencies.


Important Note for International Customers

Orders placed from outside the UK will not include UK VAT. However, you may be liable to pay import duties, taxes, and customs charges upon arrival in your country.

If you choose to reject a delivery due to these import costs, any shipping fees we incur will be deducted from your refund.

COMPLETE THE SYSTEM

Line Weight Total Length Core Tip Diameter Running Line Diameter Head Length Head Weight
#5 80' (24.3m) 25lb Low Stretch Braid 1.3mm 0.7mm 36' (11m) 17g (262gn) at 36’
#6 80' (24.3m) 25lb Low Stretch Braid 1.4mm 0.75mm 36' (11m) 19g (293gn) at 36'
#7 80' (24.3m) 25lb Low Stretch Braid 1.5mm 0.75mm 38' (11.5m) 21g (324gn) at 38'
#8 80' (24.3m) 40lb Low Stretch Braid 1.6mm 0.85mm 38' (11.5m) 23.5g (362gn) at 38'
How to attach a tapered leader

All Finner fly lines come with a welded loop, and all leaders include a perfection loop for easy connection. Follow these steps to attach your leader securely:

We will send you an email after your purchase, with video guides on how to attach leader and backing.

How to Attach a Leader Using a Perfection Loop

Step-by-Step Guide

- Hold the Fly Line Loop – Locate the welded loop at the end of your fly line.

- Thread the Leader Through the Fly Line Loop – Take the perfection loop at the end of your leader and pass it through the fly line loop.

- Feed the Leader Through Itself – Pull the leader butt section (thicker end) through its own loop.

- Gently Tighten the Connection – Pull both the fly line and leader ends to snug the loops together. Ensure the connection is secure but not overly tight to allow for easy changes.

This loop-to-loop connection creates a strong, seamless setup, allowing for quick leader changes without knots.

How to attach backing

To attach the backing to the fly line, we recommend using Finner braided loop connectors.

We will send you an email after your purchase, with video guides on how to attach leader and backing.

How to Attach Backing to a Fly Reel

Secure the reel and tie the backing to the spool using an arbor knot.

How to clean & maintain your fly line

To clean your fly line we recommend using Finner Fly Line Speed Boost

We will send you an email after your purchase, with video guides on how to maintain your fly line.

Before every fishing session apply Fly Line Speed Boost to the entire length of floating lines. Apply only to the running line on sinking lines. At the end of the season wipe the line with a damp cloth on the entire length then apply Fly Line Speed Boost.

What weight fly line should I get?

Match the line weight to the rod rating. For instance, if you have a 7 weight rod get a 7 weight line.

If the rod has 2 numbers on it (6/7 for instance) then match it with the heavier number, 7 in this case. If it's rated 7/8, get an 8 weight line and so on.

Choosing the right head length

- Short Heads: 3 x rod length
- Quick and compact
- Great for tight spaces
- Ideal for beginners

- Mid-Length Heads: 4 x rod length
- Best all-rounder,
- Provides a balance of control and distance

- Long Heads: 5-6 x rod length
- Offers longer, more stable casts
- Requires better technique and control
- Harder to cast, especially for beginners

Choosing the right taper

Short, Blunt Taper
- Loads the rod quickly
- Generates more power for casting
- Ideal for:
- Big flies
- Streamers
- Windy conditions

Long, Gradual Taper
- Smooth energy transfer for precise casting
- Delicate presentations with soft landings
- Best for:
- Dry flies
- Nymphs
- Small wets

Mid-Diameter Taper
- Balanced performance between power and finesse
- Versatile for varied fly sizes and conditions
- A great all-around choice for most anglers

Customer Reviews

Based on 41 reviews
98%
(40)
2%
(1)
0%
(0)
0%
(0)
0%
(0)
J
J.
Very good quality

Very good quality.
Sails out to the backing.
Better line than others I have 3x the price!

M
M. (Ormskirk, GB)
The whole process of ordering and quick delivery was spot on and then the line was superb

The whole process of ordering and quick delivery was spot on and then the line was superb, casts very well no kinking or coiling.
Good product will order more lines.

t
t.k. (Belfast, GB)
a great line flies through the rings can't say I've had a better fast sink line really impressed

a great line flies through the rings can't say I've had a better fast sink line really impressed.

R
R.W. (Kilwinning, GB)
Sinking Line

Used them all yesterday at Loch Avich 1st class lines

J
J. (Tauranga, NZ)
smooth to cast

Very smooth caster, nice to use.

L
L.C. (Cheltenham, GB)
Quality

Not used yet but looks and feels great
As usual great product
Thanks

F
F. (London, GB)
sinks quickly and casts well

I bought this line and a floater recently and tried them for the first time today. It was very bright sunshine, but it was so cold I couldn't feel my fingers and the wind was blowing so hard from my right, that there was white caps on the waves. But even in conditions like this, I was impressed how far I could put the line out, even across the wind. This line sinks quickly and casts well - I'm very pleased with it and the floater too.

R
R. (Frankfurt am Main, DE)
Very Satisfied

I tried the Fast Sink #7 at the small lake close to my house and was very satisfied with it.

L
L. (Cambridge, GB)
awesome to cast

Very impressed with the Fast sink, awesome line to cast will be ordering other lines in future thanks Finner

The Fast sink is a fantastic choice—glad it’s working so well for you.

E
E. (Armagh, GB)
Great fly line

Wish I had bought this at the start of the season, great fly line

Thanks so much! Glad you're enjoying the Fast sink. It’s always nice to have the right gear from the start, but here’s to plenty more great days on the water with it!

COMPARE

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APPLICATION
Ideal when you need to get deep, fast.
Don’t leave the house without it — the No.1 sub-surface searching line for lakes and rivers.
Easy to cast mid-sink line that gets to the fish’s feeding depth.
Designed to fish buzzers, wets, emergers, and small lures in the top 8 inches where fish are feeding.
Go-to searching line for effective sub-surface fishing on river and lake.
DENSITY
6 ips Sink Rate
1.5 ips Sink Rate
4 ips Sink Rate
Float / 4' 0.5 ips Hover Tip
2.5 ips Sink Rate
WATER
Freshwater
Freshwater
Freshwater
Freshwater
Freshwater
TAPER
WF #5 - #8
WF #5 - #8
WF #5 - #8
WF #5 - #8
WF #5 - #8
HEAD LENGTH
36' - 38'
36' - 38'
36' - 38'
40' - 42' 3"
36' - 38'
CORE MATERIAL
25lb - 40lb Braid
25lb - 40lb Braid
25lb - 40lb Braid
25lb - 40lb Braid
25lb - 40lb Braid

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