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Penton Owners Group

General Discussion => Penton Talk => Topic started by: skiracer on February 22, 2016, 05:20:20 PM

Title: 125 vs 175 GS pipes
Post by: skiracer on February 22, 2016, 05:20:20 PM
Is there any difference between the two pipes?  Where I going with this is wether a 125 gs would work on a 175 gs motor?

1976 MC 5 Original Owner
1982 Suzuki PE 175
1976 Penton 175 XC
1979 KTM 175 GS: FOR SALE
1985 20' Hi Point trailer
Title: 125 vs 175 GS pipes
Post by: Larry Perkins on February 22, 2016, 07:21:02 PM
Pretty sure the manifold size is different  so that part of the pipe would be different but my old mind might remember wrong.

Larry P
Title: 125 vs 175 GS pipes
Post by: skiracer on February 22, 2016, 07:27:41 PM
Thanks Larry!

Quotequote:Originally posted by Larry Perkins

Pretty sure the manifold size is different  so that part of the pipe would be different but my old mind might remember wrong.

Larry P

1976 MC 5 Original Owner
1982 Suzuki PE 175
1976 Penton 175 XC
1979 KTM 175 GS: FOR SALE
1985 20' Hi Point trailer
Title: 125 vs 175 GS pipes
Post by: G Ellis on February 22, 2016, 08:59:53 PM
James give me a call, if it is for a 1977 Gs6 175. I will let you know.
Title: 125 vs 175 GS pipes
Post by: 454MRW on February 22, 2016, 09:33:54 PM
1977 GS-6 has 4 separate pipe #'s listed in the chassis manual. 125 is 51.05.0070.500, 175 is 52.05.070.500, 250 is 54.05.070.500, and 400 is 55.05.070.500. If it is a 76 Cross Country, often referred to as a GS, there are also 2 different part #'s. 100/125, which is 51.05.070.400 and 175 52.05.070.100 and noted as interchangeable with 52.05.070.300, 250 is 54.05.070.400, and 400 is 55.05.070.400. The 2 exhaust flanges on the 76 Cross Country is different between the 100/125 and the 175, 100/125 51.05.073.00 vs 175 52.05.073.000 which differs from the 250/400 flange 54.05.073.000 according to the engine manual.
Good luck. Mike

Michael R. Winter
I enjoy rebuilding and appreciating Pentons!
1974 250 HS Pentons-1978-1979 MX-6 175 & 250 KTM's
1976-78 125-400 RM's & 79 PE250 Suzuki & 2012 DR650
2007 CR125R Honda
1977 MC250 Maico
Title: 125 vs 175 GS pipes
Post by: 454MRW on February 23, 2016, 01:44:11 PM
James according to the 79 chassis manual the 125 & 175 use the same pipe, with one exception as an alternative 125 MC pipe with a small stinger and silencer. Mike

Michael R. Winter
I enjoy rebuilding and appreciating Pentons!
1974 250 HS Pentons-1978-1979 MX-6 175 & 250 KTM's
1976-78 125-400 RM's & 79 PE250 Suzuki & 2012 DR650
2007 CR125R Honda
1977 MC250 Maico
Title: 125 vs 175 GS pipes
Post by: skiracer on February 24, 2016, 11:50:24 AM
Thanks Mike!  Your wealth of knowledge is well appreciated!

Quotequote:Originally posted by 454MRW

James according to the 79 chassis manual the 125 & 175 use the same pipe, with one exception as an alternative 125 MC pipe with a small stinger and silencer. Mike

Michael R. Winter
I enjoy rebuilding and appreciating Pentons!
1974 250 HS Pentons-1978-1979 MX-6 175 & 250 KTM's
1976-78 125-400 RM's & 79 PE250 Suzuki & 2012 DR650
2007 CR125R Honda
1977 MC250 Maico


1976 MC 5 Original Owner
1982 Suzuki PE 175
1976 Penton 175 XC
1979 KTM 175 GS: FOR SALE
1985 20' Hi Point trailer
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