1978 GS-PARTS

[Lee Brown]

FOR SALE
78-GS Gas Tank good shape needs stickers,good gas-cap no dents,good leather strap,good petcocks,$80.00 plus shipping
78- Air Box with cover good shape $25.00 plus shipping
78-Rear Sub-Frame Mud Flap Descent shape need to use fender washers to mount still very usable $25.00 plus shipping
Pair Marzzochi shocks clean shafts needs sand blasting,for parts
$30.00 plus shipping
78-GS SwingArm Front plastic chain guide good shape, comes with good kick stand $30.00 plus shipping thx.....





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[Bob Seymour]

Lee,
   Could you send me a piture or two of the Marzocchi shocks you have for sale? Also what length are they eye to eye?  Send pics to my email at: [email protected]
                                       Thanks,
                                             Bob

[Bob Seymour]

Lee,
  Send me a picture or two of that swingarm also. The swingarm is the same is'nt it for the GS and MC models? I think the only difference back then was the addition of a rear frame loop and different rear fender on the GS? Thanks,
                                      Bob

[454MRW]

Bob,
78 actual GS-6 had the large tunneback frame and a different swingarm with a center stand, and the front chain slider is the tall enclosed type with a tall matching bracket and a large black plastic chain guard bolted to the swingarm like on the 77 GS-6. I have 78 GS-6 250 myself. The GS-6 frame does not have a removable rear frame loop, so sometimes the bolt on rear frame loop which was as addition that could be added to a 78 MC-5 could be mistaken for a GS model. The 78 GS-6 models usually had a frame number starting with 801, 805, or 807, where the MC-5 has a frame number starting with 855. Since Lee's tank uses a tank strap to hold it on, it very well may be a GS-6. Mike

Michael R. Winter
I enjoy rebuilding and appreciating Pentons!
1974 250 HS Pentons-1980 KTM 175-400'S
1975 Can Am 175 TNT & 77 250 Black Widow
1979 Husqvarna OR390
1976-78 RM & 77-79 PE Suzuki's
1974 CR250M 07 CR125R 79 CR250R

[marsattacks]

Some GS had side stands some had center.  The swingarm is different between side and center stands.  Good news is each will fit MC or GS frame.

[marsattacks]

Lee I am interested in tank and strap/petcocks.  Any pics avail?  Thanks! John

Mars Attacks!

[454MRW]

The 78 MC5 swingarm is 1/2" longer than the 78 GS-6 and although you could probably use the GS-6 swingarm on the MC-5 you might have to cut the tall chain slider off some to clear the plastic airbox, and remove the plastic chain guard which the MC-5 did not have. The GS-6 uses the Magnesium snail shaped airbox, same as the earlier GS-6 and MC-5 bikes. The 78 MC-5 aorbox is a one year only airbox and there were replacement Hi-point and Acerbis airboxes with quick change airfilters available. Mike

Michael R. Winter
I enjoy rebuilding and appreciating Pentons!
1974 250 HS Pentons-1980 KTM 175-400'S
1975 Can Am 175 TNT & 77 250 Black Widow
1979 Husqvarna OR390
1976-78 RM & 77-79 PE Suzuki's
1974 CR250M 07 CR125R 79 CR250R

[marsattacks]

My 78 MC5 with a GS6 swingarm and center stand.  Has The MC5 airbox. I have the mag box but didn't need it.  Maybe I was lucky.

http://www.youtube.com/watch?v=J4n6yoCdZR0&feature=youtube_gdata_player

[454MRW]

Yeah, I wasn't sure whether the GS-6 chain guard would clear the MC-5 airbox, but it looks like you didn't have any problems. I doubt if the 1/2" shorter swingarm would be any issue and it may even turn sharper. The center stand is definitely a plus! The GS-6 snail airbox might not be a direct bolt in with the tabs in a different location but I have never checked to see how similar the mounts are. Mike

Michael R. Winter
I enjoy rebuilding and appreciating Pentons!
1974 250 HS Pentons-1980 KTM 175-400'S
1975 Can Am 175 TNT & 77 250 Black Widow
1979 Husqvarna OR390
1976-78 RM & 77-79 PE Suzuki's
1974 CR250M 07 CR125R 79 CR250R