Truflo Micro 4 Mini Pump Flexi Head

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Product Description

Great value flexi head mini pump.

Key Features:
  • General purpose design suitable for road or MTB use
  • Pull out Flexi head with dual connector fits presta or schrader valves without internals to change
  • Supplied with bracket to fasten the pump to any water bottle bosses on the frame
  • Compact design at 210mm closed
  • Integral dustcap to protect your pump from the inevitable rain and mud

Occasionally, without notice, manufacturers change product design and/or specifications.

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Hand Pump Guide


Hand Pump Guide

Hand pumps are the type you need for road or trail side use. Suitable for road, mountain and hybrid bikes they are small enough to fit in a trail pack and many can also be strapped to the frame of your bike.

What to look for

Valve Type

There are two main valve types used for cycling. Most hand pumps are suitable for both types of valve, but some will only fit one, so it’s best to know which type you need before you buy.

Schrader valves are the same type of valve that you find on cars. This valve type is usually found on kids bikes as well as more affordable mountain and hybrid bikes.

Presta valves are cycling specific valves. You’ll find these valves on road bikes as well as high-end mountain and hybrid bikes. Most tubeless valves are Presta valves.

types of bike valve

Most hand pumps require a small amount of disassembly to convert between Presta and Schrader valves. Dual-Head, SwitchHitter, and some other pumps work with both types of valve with no disassembly required.

High Pressure (HP) or High Volume (HV)

Some hand pumps are best for certain bike tyres and this depends on the tyre pressure and volume of the tyre. Mountain bikes have wide tyres that need lots of air, but pressures are low, so a High-Volume pump is best. Road bikes have narrow tyres that need less air, but the pressures are much higher, so a High-Pressure pump is best. Hybrid tyres fit somewhere between road and MTB so a general-purpose pump will be fine.

The maximum pressure of your tyres will be written on the side walls.

Typical Bike Tyre Pressures

Mountain Bike Tyres

Tyre size

Tyre pressure*


40 psi


35 psi


28 psi


23 psi


18 psi

Road & Hybrid Bike Tyres

Tyre Size

Tyre Pressure*


115 psi


100 psi


90 psi


80 psi


70 psi

Pump Size

There is always a bit of a trade off with hand pump size. A smaller pump is easier to carry, as it takes up less room, but pumping up your tyres will be more difficult. Very small high-pressure pumps are okay for topping up pressures on a road bike, but you will need a larger general purpose or high-volume pump for wide mountain bike tyres.

two mini pumps

Frame Mounts

If you want to attach your pump to the frame of your bike, then you’ll need one that comes with a Frame mount. Most small and medium size hand pumps have them. Frame mounts are compatible with bottle cages and both fit on the same mounting points, usually on the down tube and/or seat tube. Some larger hand pumps aren’t suitable for attaching to the frame so will need to be carried in a pack.

hand pump with frame mount

Other Features

Pumps with a flexible hose are easier to use as they allow for a little movement when using the pump, so tend to let less air escape. Some mini pumps have a hidden hose that can be extended for use. Hand pumps that have a foot plate and a T-handle are easiest to use. You can pump up tyres very quickly with these pumps, but they tend to be quite bulky.

Another useful feature is a pressure gauge to help you get the right tyre pressure. The gauges on these pumps aren’t the most accurate but they will give you a better idea of your pressures than pressing the tyre with your thumb.

hand pump with foot plate

Delivery & Guarantee

UK Delivery Information

International Deliveries – Temporarily Suspended 11/11/20

Note: We are still offering deliveries to the Isle of Man, Scottish Highlands, Scottish Islands, Channel Islands, Isle of Wight, Jersey and Guernsey. 

Courier Delivery update: Due to the COVID19 situation, we are currently experiencing some delays with deliveries. Our couriers are working around the clock to get your order to you as soon as possible but there is a potential delay of up to 48 hours . Please check your tracking on track your order here.

Please download the TNT Track and Trace App for iOS here and Android here so you can keep an eye on your delivery and any further updates.

Please note on the TNT tracking app it may show your delivery status as ‘Collecting’ (as per image below). This means your delivery has left our warehouse and is currently held at TNT main depot and there could be up to a 48 hour delay.

tnt delivery

Please keep checking the TNT tracking for further updates. On behalf of TNT we apologise for any delay and inconvenience this may cause. 

We are committed to offering fast and free delivery, whether you're ordering bikes, accessories or clothing. Our standard delivery service is FREE in the UK, regardless of the size and on all orders over £20.

Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping.

Please note that Pre-Order dates can sometimes change due to updated stock information.

Click here for more UK and international delivery information.

Returns & Warranty

It's easy to return a product with our 365 day, hassle free returns. 

We will give you a full refund on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).

Please note: For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.

If your item develops a fault or arrives damaged, please contact us first so we can resolve the issue for you as quickly as possible.

For more information please visit our Returns & Warranty page.