Sunrace 7 Speed Freewheel
£18.99
was
Ratio
£18.99
was
Manufacturer :
SJS Cycles part number :
Manufacturer part number :
Details
- Function: Road & MTB
- Speed: 7 Speed
- Number of Teeth: Road 13-25T / MTB 13-28T
- Sprocket Material: Steel
- Spacer Material: Engineering Polymers
- Chain Compatibility: 7.3mm
- Average Weight: 460g
Ratios Choices:
- Road 13-25T = 13 / 15 / 17 / 19 / 21 / 23 / 25T
- MTB 13-28T = 13 / 15 / 17 / 19 / 21 / 24 / 28T
Requires a Shimano type splined freewheel removal tool. (Shimano's own is SJSC part #870)
- Speed: 7 Speed
- Number of Teeth: Road 13-25T / MTB 13-28T
- Sprocket Material: Steel
- Spacer Material: Engineering Polymers
- Chain Compatibility: 7.3mm
- Average Weight: 460g
Ratios Choices:
- Road 13-25T = 13 / 15 / 17 / 19 / 21 / 23 / 25T
- MTB 13-28T = 13 / 15 / 17 / 19 / 21 / 24 / 28T
Requires a Shimano type splined freewheel removal tool. (Shimano's own is SJSC part #870)
Specification
Downloads
Download File
Questions & Answers (9)
What tool to remove the lockring?
By MARK STEWART
14 Feb 2024
Hello, I want to remove the lock ring on this freewheel, do you know which 4 prong tool I need to remove the lock ring ?
SJS Customer Service:
Hi
Thank you for your enquiry. This freewheel uses a standard freewheel remover so you would need something like our item number 22213 which is the IceToolz Cassette Tool for Shimano MF & Campagnolo.
Kind Regards. JP 15/02/24
Thank you for your enquiry. This freewheel uses a standard freewheel remover so you would need something like our item number 22213 which is the IceToolz Cassette Tool for Shimano MF & Campagnolo.
Kind Regards. JP 15/02/24
Is the 13t cog black or silver?
By Craig
26 Jul 2020
SJS Customer Service:
The 13t cog is silver
What’s the best chain for the 13/25 cassette on a MTB?
By Anonymous
06 Mar 2020
I recently swapped my MTBs Shimano MFTZ21 (14/28) to the Sunrace 13/25, along with a new Shimano HG40 chain (7.3mm as recommended). But I now feel a constant grinding/vibration when I peddle, it’s not smooth like the old MFTZ21/HG40 set up.
When not riding/checking the indexing there’s no sound and the gears shift fine. After only 250 miles the chain is nearly at 0.75 and slips in and out of gear when peddling with force.
Did I choose wrong by using a road cassette on a MTB (I wanted a tighter teeth ratio) or would a different chain make/model stop the vibration?
Thanks
When not riding/checking the indexing there’s no sound and the gears shift fine. After only 250 miles the chain is nearly at 0.75 and slips in and out of gear when peddling with force.
Did I choose wrong by using a road cassette on a MTB (I wanted a tighter teeth ratio) or would a different chain make/model stop the vibration?
Thanks
SJS Customer Service:
That chain / cassette should be absolutely fine. The issue my be that your chainrings are worn. We recommend heading for the local bike shop and have them take a look.
Thanks - 13/03/20
Thanks - 13/03/20
Suitable replacement for the Shimano MFTZ 500-7 freewheel unit?
By Anonymous
20 Jun 2019
I have a new Brand-X road bike fitted with the O/E 7spd Shimano MFTZ 500-7 14-28t freewheel unit.
As I want to increase the gearing slightly would this Sunrace Index 7spd 13-28t unit be a suitable replacement?
As I want to increase the gearing slightly would this Sunrace Index 7spd 13-28t unit be a suitable replacement?
SJS Customer Service:
Yes this should be a fine replacement.
Thanks - 21/06/19
Thanks - 21/06/19
The specification says that it is compatible with 7.3mm chain. Is this the same as 3/16? Thanks
By Tom
26 Nov 2018
SJS Customer Service:
Not quite, you simply need a 3/32 6/7/8 speed chain.
Thanks - 26/11/18
Thanks - 26/11/18
Difference between road and MTB versions?
By Anonymous
13 Oct 2018
Hi,
Is there any difference between the road and MTB versions aside from the number of teeth? Is there anything stopping me from running the MTB version on a road bike?
Cheers
Is there any difference between the road and MTB versions aside from the number of teeth? Is there anything stopping me from running the MTB version on a road bike?
Cheers
SJS Customer Service:
Simply the ratios!
thanks - 15/10/18
thanks - 15/10/18
What Is The Stack Height For This Product Please?
By MHA
28 Sep 2016
I have an old racer with 126mm dropout spacing looks like there's about 39-40mm available for the freewheel, it may be that sunrace's 6 spd is a better option, again not sure what the stack height is there.
SJS Customer Service:
Hi,
This 7spd freewheel has a stack height of 37mm so should hopefully fit okay.
Thanks.
This 7spd freewheel has a stack height of 37mm so should hopefully fit okay.
Thanks.
Does This Need To Be Torqued Up When Fitted?
By Anonymous
09 Feb 2015
If yes, what torque setting would be suitable?
SJS Customer Service:
Hi,
This would not need to be torqued up. As long as it is done up fairly tight initially, pedalling the bike will keep tightening it up as far as it needs to as well as keeping it tight enough.
Thanks.
This would not need to be torqued up. As long as it is done up fairly tight initially, pedalling the bike will keep tightening it up as far as it needs to as well as keeping it tight enough.
Thanks.
Is This A Screw On Type Freewheel?
By stephen
25 Feb 2014
SJS Customer Service:
Hi
Yes, this is a 7spd screw-on freewheel.
Regards
Jamie
Yes, this is a 7spd screw-on freewheel.
Regards
Jamie