Topeak Road Master Blaster Frame Fit Pump

Question 1

Compressed length of M & L pumps?

By andy

30 Aug 2023

Two bikes - TT spaces for pump are 54cm, & 53cm. What are compressed lengths of the M & L pumps? Just wondering which will be best - potentially one pump for both bikes.

SJS Customer Service: · Answer

Hello & thank you for your enquiry.
M for frame sizes between 49 - 54cm - (actual pump size 42 - 47.5cm) - compressed to expanded.
Kind regards, pc 31/8/23.

Question 2

Topeak Master Blaster L or XL for a 52cm top tube?

By Pete

20 May 2023

I'm looking to buy the Topeak Master Blaster frame pump but am inbetween sizes. My bike is a 58 frame with a top tube of 52cm. Shall I order a L or XL? Thanks.

SJS Customer Service: · Answer

Looking at the sizing guidelines the large pump will fit your requirements slightly better, both will fit your frame though. SK 22/05/23

Question 3

My frame size is 54cm. Should I go with the medium or large? (Under top tube is 51cm)

By Marc

14 Aug 2022

SJS Customer Service: · Answer

Sor this we would suggest Medium size,

JK 16.08.22

Question 4

My bike has an under top tube measurements of 56 cm what size Will fit my guess is a large

By fiona weir

01 Aug 2022

SJS Customer Service: · Answer

Yes a large is what we would suggest here :)

JK 01.08.22

Question 5

Dose the pump head have the capacity to work with pump pegs on the headtube

By Anonymous

07 Jun 2022

SJS Customer Service: · Answer

Yes, it does, there is provision for location into pump pegs.

JK 08.06.22

Question 6

Hello, What size do I need. inner head tube to seat tube is 46cm

By Philip Runeckles

15 Jul 2020

SJS Customer Service: · Answer

You will need a Medium, as the pump expands to fit the frame, thus a 46cm long space means the M for frame sizes between 49 - 54cm - (actual pump size 42 - 47.5cm) will fit.

Question 7

Sizing for topeak master blaster

By Dan

27 Jul 2018

Hi.The length under the top tube to where the pump will be placed on my Pinnacle Laterite bike is 49.5 cm. What size pump do I need to order please? I previously ordered a Xl and that was too big!

SJS Customer Service: · Answer

Hi there,

We would recommend using the medium size.

Thanks

Question 8

Will this work with Presta valve? What size for pegs that are 42cm from peg to peg?

By Mark

26 Oct 2017

SJS Customer Service: · Answer

Hi,

This pump will be fine for use with Presta valves. We would recommend a size small for use with your frame.

Thanks.

Question 9

47.5cm, Large or Medium?

By Alessandro

01 Aug 2017

The gap where the pump would sit under the top tube is 47.5cm. Should I got with Medium or Large?

SJS Customer Service: · Answer

Hi, we suggest the Medium size. Thanks.

Question 10

Pump Size

By Alan Thomson

27 Jan 2017

Hello. I have an old bike with 2 pump pegs on the seat tube with 46.5 cm between the tips of the pegs . Which is the correct size of pump please? Thanks

SJS Customer Service: · Answer

Hi,

As your frame has a distance of 46.5cm between the pump pegs it is the medium sized pump that you need.

Thanks.

Question 11

Frame Pump For Thorn Mercury 610L

By Mr J Palmer

08 Sep 2016

Can you recommend a pump to fit this frame
Presta valve. Do not like Mini pumps.

Regards,
Jim Palmer

SJS Customer Service: · Answer

Hi,

As there are no pump pegs on your bike you'll need to go for a pump that can work without pegs like this Topeak pump. You'll need the XL size to fit the top tube on your bike.

Thanks.

Question 12

Best Frame Pump For Thorn Discovery Tandem?

By Anonymous

07 Mar 2016

The bike just has one pump peg, what's the pump you'd recommend ? It's about 50 cm to frame angle. My mini pump struggles to get over 50 psi. Graham

SJS Customer Service: · Answer

Hi,

The frame pump we recommend is the Zefal HPX (SJSC part number 37684) these are designed to fit to a single peg and are what we have fitted to our bikes for a large number of years.

Thanks.

Question 13

Topeak Road Masterblaster™ Still Confused By Sizing!

By Stevie Wonders

13 Nov 2015

Looking at the Topeak, to put under my top tube (49cm gap), am I correct in going for the large (47 to 52.5cm)?

SJS Customer Service: · Answer

Hi,

Unfortunately for some reason Topeak bases its sizing on the frames full size rather than any of the lengths relevant to where you are going to fit a pump. You are correct though for your frame you would need the large size.

Thanks.

Question 14

Which Frame Pumps Will Fit A 57Cm Frame (50 Cm Opening)?

By Peter Mansfield

09 Mar 2015

Sorry but I'm totally confused since some descrptions (Zefal) refer to the pump length (ok got that) others refer to frame size (understand that but then the topeak shows illustrations highlighting the top tube measurement which is different to those given in the size list and others are ambiguous. Iin the case of the Silca I assume its frame size but for a sloping tube compact. Is it a ploy to make us all buy the Park Tool?

I think Topeak Large/Zefal size 3 and of course Park Tool are my options but I'd like to be sure since returns are a pain. I know its a tiny thing and you have loads more to do and information comes from manufacturers but using a consistent measurement ie pump actual size would be a real help . .. .... help!!

SJS Customer Service: · Answer

Hi,

Any of the 3 options you have suggested would be suitable. The Silca, Zefal and Park Tool all refer to opening size (actual pump length) where as the Topeak is referring to full frame size and the pictures showing the top tube measurements are the actual size of each size of pump. I will update the sizes on the Topeak so all the pumps show the actual length of the pumps in the sizing to help choose the correct size.

Thanks.