When you want to partially quote what someone else says, leave in the bracketed quote at the beginning and end of each quote that appears when you click on the quote button. Let's see if this works, since I'm using Firefox for this post.
Never mind. I see from your last post that you already figured this out.

 

I think I remember that the tube size was increased slightly from the older bikes. I would check them before I started pulling things apart.

Any machine shop should check them for free. Any decent hardware store should have Outside Calipers like the one in the center in this LINK.

Even taking a C-clamp to check them should help in determining if they are the same. Just tighten the clamp just enough the get a slight (real slight) fit and then see if it feels the same on the other tubes.

EDIT: Actually, you need to remove the old tubes anyway, so why not slip them out and see how the e-bay tubes fit. You will know then if you should start pulling them apart.

 

Jack, I just wanted to drop in to say I'm glad you're OK! Good luck with the fork replacement!

 

Just checked on the fiche in the manuals section at the top of the page.

1990 front fork tube part No 51410-MS2-003 (both left and right)

1987 front fork tube part No 51410-MM5-003 (right hand side)

1987 front fork tube part No 51510-MM5-003 (left hand side)

Would appear the parts are different

Seem to remember this being the case when I was looking for replacement fork tubes myself. I seem to remember they are slightly narrower.

Another way to test them would be to loosen the triple trees just enough to get the original forks out, then try sliding the 'new' ones in and see how they fit

 

I'm going to try and get an accurate measurement somehow after the holiday. I have had no luck finding a set of forks for a 90-91 bike so hopefully they will work.

If not.. does anyone have suggestions as to what other bikes have the same size fork tubes? Has anyone grafted a different front end onto one of these bikes and had it work out well? My CBR is in very good shape considering all I have put her though.. mileage is only 30k, it runs wonderfully.. plastics, aside from the tail and front fender, were barely damaged in the crash.

I'd love to get this bike back on the road but it's been discouraging finding the parts so far. It's worth a lot more to me running than it is in parts.

-Jack

 

Hey thanks man, I am too. ATGATT saved the day. I came out with a small bruise on my forehead, a stiff neck and a sore right hand. No broken bones or any serious injury. The EMT's were shocked..

I did get thrown over the bars and land on my head!

-Jack

 

The seller contacted me the other day and offered to let me keep the forks if I accepted a refund of my purchase price less the shipping cost.. or I could return them at his expense and have a refund for the entire amount.

I told him I'd keep the forks for the sake of the 20$ shipping. I am hoping I can use the tubes to fix my front end.

If not I can sell them on again and get my $ back easily enough. I bought the forks for 70$, I'm sure someone out there will be willing to pay me 20$ for them.

 

No guarantees as to accuracy, but bikes with 41 mm fork tubes-
41 Honda CR-250R (81)
41 Honda XR-250L (91-96)
41 Honda XR-250R (86-89)
41 Honda XR-250R (90-04)
41 Honda XR-350R (83)
41 Honda XR-350R (84)
41 Honda XR-350R (85)
41 Honda CB-400F (89-90)
41 Honda CR-450R (81)
41 Honda CBR-600F2 (91-94)
41 Honda CBR-600SE (9Cool
41 Honda XL-600V "Transalp" (89-90)
41 Honda NT-650 "Hawk GT" (89-91)
41 Honda NX-650 (88-89)
41 Honda CB-750 "Nighthawk" (91-03)
41 Honda RVF-720R (94)
41 Honda VF-750C "Magna" (94-03)
41 Honda VF-750C2 "Magna Deluxe" (97-00)
41 Honda VFR-750F (90-97)
41 Honda VT-750CDA/B/C/D "Shadow American Classic Ed. Deluxe"
(03)
41 Honda VT-750DC (01-03)
41 Honda PC-800 (89-90, 94-9Cool
41 Honda CBR-1000F "Hurricane" (87-91, 93-96)
41 Honda VF-1000F "Interceptor" (84)
41 Honda VTR-1000F "Super Hawk" (98-04)
41 Honda ST-1100 (91-02)
41 Honda VF-1100C "V65 Magna" (83-86)
41 Honda VT-1100C "Shadow 1100" (85-90, 92-96)
41 Honda VT-1100C2 (95-99)/ C2-2 (97) "Shadow 1100 American
Classic Ed."
41 Honda VT-1100C3 "Shadow Aero" (98-02)
41 Honda VT-1100D2 "Shadow 1100 American Classic Ed." (99)
41 Honda VT-1100T "Shadow 1100 American Classic Ed. Tourer"
(98-00)
41 Honda GL-1200 "Goldwing" (84)
41 Honda GL-1200 I "Interstate" (84-87)
41 Honda GL-1200L "Ltd" (85)
41 Honda VTX-1300C (04)
41 Honda GL-1500 "Goldwing" (88-90)
41 Honda GL-1500I "Interstate" (91-96)
41 Kawasaki KX-125 B1 (82)
41 Kawasaki KX-125 H1 (90)
41 Kawasaki KDX-200E5-E6 (93-94)
41 Kawasaki KX-250H1 (90)
41 Kawasaki KXT-250B1 (86)
41 Kawasaki EN-500C1-C8 "Vulcan 500 Ltd" (96-03)
41 Kawasaki EN-500C9 "Vulcan 500 Ltd" (04)
41 Kawasaki KX-500 E2 (90)
41 Kawasaki ZX-600D1-D4 "Ninja (ZX-6)" (90-93)
41 Kawasaki ZX-600E1-E12 "Ninja (ZX-6)" (93-04)
41 Kawasaki ZX-600F1-F3 "Ninja (ZX-6R)" (95-97)
41 Kawasaki ZR-750C1-C3 (91-93)
41 Kawasaki ZR-750F2 (00)
41 Kawasaki ZX-750K1/K2 "Ninja (ZX-7R)" (91-92)
41 Kawasaki ZX-750L2-L3 "Ninja (ZX-7)" (94-95)
41 Kawasaki VN-800 A1-A10 "Vulcan" (95-04)
41 Kawasaki VN-800 B1-B9 "Vulcan Classic" (96-04)
41 Kawasaki VN-800 C1-C2 "Vulcan Drifter" (99-00)
41 Kawasaki ZX-900B1-B4 "Ninja (ZX-9R)" (94-97)
41 Kawasaki ZG-1000A1-A13 "Concours" (86-9Cool
41 Kawasaki ZG-1000A14-A19 (99-04)
41 Kawasaki ZR-1000A1/A2 (03-04)
41 Kawasaki ZX-1000B1-B3 "Ninja (ZX-10)" (88-90)
41 Kawasaki ZX-1100E1-E3 "GPz 1100" (95-97)
41 Kawasaki ZG-1200A1/B1-B17 "Voyager XII" (86-03)
41 Kawasaki KZ-1300A1-A4 (79-82)
41 Kawasaki ZN-1300A1-A6 "Voyager" (83-8Cool
41 Kawasaki VN-1500A1-A5 "Vulcan 88/Vulcan 1500"(87-91),
VN-1500 B1-B4"Vulcan 88 SE" (87-90)
41 Kawasaki VN-1500A6-A13 (92-99)
41 Kawasaki VN-1500 D1-D2 "Vulcan 1500 Classic" (96-97)
41 Kawasaki VN-1500 E1-E7 "Vulcan 1500 Classic" (98-04)
41 Kawasaki VN-1500 G1/G1A/G2 "Vulcan 1500 Nomad" (99-00)
41 Kawasaki VN-1500J1-J2 "Vulcan 1500 Drifter" (99-00)
41 Kawasaki VN-1500 L1-L5 "Vulcan 1500 Nomad Fi" (00-04)
41 Kawasaki VN-1500N1-N3 "Vulcan 1500 Classic Fi" (00-02)
41 Kawasaki VN-1500R1-R4 "Vulcan 1500 Drifter" (01-04)
41 Suzuki RM-125 L (90)
41 Suzuki RM-125 L (90)
41 Suzuki RM-250 K/L (89-90)
41 Suzuki RM-250 K/L (89-90)
41 Suzuki RMX-250 K/L (89-90)
41 Suzuki RMX-250 K/L (89-90)
41 Suzuki AN-400 K3/K4 (03-04)
41 Suzuki GSF-400 M/N/P "Bandit" (91-93)
41 Suzuki GSF-600 ST/SV/SW "Bandit" (96-9Cool
41 Suzuki GSF-600 ST/SV/SW "Bandit" (96-9Cool
41 Suzuki GSF-600 SX//SY/SK1/SK2/SK3 "Bandit" (99-03)
41 Suzuki GSX-600 FJ "Katana" (8Cool
41 Suzuki GSX-600 FK/FL/FM "Kata

 

WOW!

Joseph has given you one hell of a list to check out there Jack!!

 

You could try ALL BIKE ENGINEERING - they make very good aftermarket tubes for most bikes. http://www.allbikeengineering.co.uk/html/forks.html

I would even go as far as saying they are better quality chrome than OEM.