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Differences & Similarities between 135cc RX series
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Lol!!! But we still prefer calling it Crux metersOriginally posted by arvindraju View PostWrong
Very Few RX135 2004-2005 Models are seen on road,people often mistake it Crux meters

Tks for the info Arvi
Skill is what keeps you on a Motorcycle
Awareness + Skill is what keeps you out of harm's way
ATGATT + Awareness + Skill means you might Live To Ride another day
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The meters that you guys have been talking is from RX100 - Mexico model.
I have the parts manual (english), in that it resembles just like the one came in RX135 later model.RX100 1996 | Karizma 2004 | Karizma-R 2011 | RXZ 1999 | RX 135 1998 | RX 100 1993 | CBF150 2005 - 2011
2012 - Meghamalai | Kuttralam | 2011 Ooty | Munnar | 2010 Point Calimere | Horsley Hills | Yercaud
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just coz the meter plates are different!! hehe.. the meter pods are still CRUX!!!Originally posted by arvindraju View Post
My offerings to the gods of speed -
- KTM Duke 200
- Yamaha RXZ 5 speed
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guys these RX 4speed with 5s covers and different crux type meters are very common in coimbatore in tamilnadu...i know atleat some 5 guys in my area itself having these rare pieces... according to one of them..72 bikes of this model were sold in coimbatore....they are often mistaken as 5speed though!!
...one of my office colleague also has it...!!
Rx is a Phoenix!!! It always rise from ashes!!
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Originally posted by karthikdattag View PostDear All,
I am listing down some basic differences & similarities between 4-speed & 5-speed RX135 (Includes RXG & RX-Z), which will help people to differentiate & learn more about these legendary series once produced in India.
1. Bore Kit (a.k.a Piston-Cylinder Kit / Barrel / Block)
4-Speed - '4TL00' with OEM "ART" STD piston '4Y201', Rating: 12BHP @ 6500RPM
5-Speed - '4TL10' with OEM "ART" STD piston '4Y201', Rating: 14BHP @ 7500RPM
Note1: (which is the displacement) and the RH side (Crank Kicker Side) has the batch of manufacturing, for ex., E1, E2, E3 or E4 (All of them have exactly similar performance, people who swear by performance of E1 being the best, is all crap.) Also if nothing is mentioned or some other type code is mentioned, then the Cylinder is a fake, except for '4Y201' which is the original block of RX-K.
Note2: The Cylinder packing has the following description on it:
1. RX135 4-Speed / RXG / RX-Z 4-Speed: "Cylinder Kit RXG"
2. RX135 5-Speed / RX-Z 5-Speed: "Cylinder Kit 5-Speed"
Note3: Displacement calculation
For Std RX135 being a single cylinder engine, we have the following inputs,
Bore Dia = 58mm
Bore Radius = 58/2 = 29mm
Bore Radius Squared = 841mm2
Stroke Length = 50mm
Pi = 22/7 = 3.142857 (Corrected upto 6 decimals)
Number of Cylinders = 1
Displacement in mm3 = Stroke x Bore Radius Squared x Pi x No. of Cylinder
= 50 x 841 x 3.142857 x 1
= 132157.143
Displacement in cm3 = 132157.143/1000
= 132.157 (Corrected upto 3 decimals)
2. Piston Kit
The OEM Piston kit for Indian RX135 series are from "ART" Japan. For Indian models piston sizes from STD to 0.5mm are available (in steps of 0.25mm). On careful observation of the piston, one can identify if it is original or not. Simply turn the piston upside down & inside we can see "ART" & "4Y201" clearly written. This is the proof for original piston. The piston kit essentially comprises of
Piston (STD/0.25mm/0.5mm)
Piston Rings
Piston Pin
Clips
Note: The pistons are the same for RX135 4-Speed, RX135 5-Speed, RXG, RX-Z.
3. Carburettor Assembly
The OEM Carb assembly for RX135 is Mikuni / UCAL Mikuni. The Carb assembly are different for both 4-Speed & 5-Speed versions.
4-Speed: '4TL 01' with Main Jet = 165 & Pilot Jet = 17.5
5-Speed: '4TL4 20' with Main Jet = 135 & Pilot Jet = 15.0
These are VM type of Carburettors manufactured by Mikuni & both are 22mm. Additonally VM24 & VM26 are used for RX available in South-East Asian countries (Like Singapore, Indonesia & Malaysia) and in South American Countries (Like Peru, Argentina & Brazil). The details of these are given below:
VM24: '2YA 00' with Main Jet = 145 & Pilot Jet = 20.0
VM26: '55K 00D' with Main Jet = 210 & Pilot Jet = 22.5
These carbs (VM24 & VM26) are direct fit to Indian RX135s with some minor jetting changes required based on the Power output of the engine.
Note: The type code is mentioned just above the 2-T oil Inlet in the carb, with that the originality can be confirmed.
4. Head Assembly
The heads are also different for 4-speed & 5-speed. The type code is mentioned below:
RX135 4-Speed: '4TL5' written on inner side (Top) of Head (For OE fitting Catalytic Converter type)
RX135 4-Speed / RXG: '4TL00' written on inner side (Top) of Head (For OE fitting Chrome Silencer)
RX135 5-Speed: '09L' written on inner side of Head
5. Clutch Bell Assembly with Primary drive
The clutch bell assembly are the same for 4-speed & 5-speed RX135 (Including the number of Clutch plates), but it is different for RX-G. Below are the differences mentioned:
RX135/RX-Z 4-Speed/5-Speed: Main Bell = 74 Teeth
Primary Drive = 19 Teeth
RX-G : Main Bell = 71 Teeth
Primary Drive = 22 Teeth
6. Chain Sproket
The sproket (Front & Rear) are all different for entire RX series. Detailed info given below:
4-Speed: 16T / 34T
5-Speed: 15T / 38T
RX-G : 15T / 37T
7. Gear Box
The Gearbox are obviously different for 4-speed & 5-speed. Details below:
4-Speed:
1st = 35/11 = 3.182
2nd = 30/15 = 2.000
3rd = 26/19 = 1.368
4th = 23/23 = 1.000
5-Speed:
1st = 35/11 = 3.182
2nd = 30/15 = 2.000
3rd = 26/19 = 1.368
4th= 24/22 = 1.091
5th = 22/24 = 0.917
8. Engine
The engine may be classifed based on Top End (Included Cylinder+Piston & Head) and Bottom End (Includes Clutch Assembly, CrankShaft, Engine Bearings, Crank Kicker, Engine Cases, Clutch/GB Covers, Ignition coil, GearBox Assembly etc as major components). Most of these items are already covered in points 1 to 7 above.
Note1: The RX135 4-Speed & RX-Z 4-Speed share the same Engine, likewise RX135 5-Speed & RX-Z 5-Speed share the same Engine.
Note2: The CrankShaft Assembly is the same for RX135, RX-G, RX135 5-Speed & RX-Z.
Note3: We can identify looking at the Engine number if the Bike was a 4-Speed version or a 5-Speed verion. Check the details below:
1. RX135 (With Chrome Silencer as OE fitting): 1L5 XXXXXX
2. RX135 (With Catalytic Silencer as OE fitting): 4TL XXXXXX
3. RX135 5-Speed: 1L7 XXXXXX
P.S: The RX135 5-Speed never came with OE fitted Chrome silencer, the OE fit was the Big Hot-Tube type catalytic converter Exhaust.
Any comments/additions are most welcome. Hope you all enjoyed this read.
I request all senior members to help make this thread sticky, so that all the RX enthusiasts are benifitted by this & it would avoid new joinees to ask unwanted questions. I sincerly request the moderator to look into this.
Thank you.
-Karthik..
Wow man that was a perfect explanation.RXZ 5 Speed | RXZ 4 SPEED
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+1... @karthikdattag: that is truly well researched and written... will use the same for future reference... thanksOriginally posted by RXZ5speed View PostWow man that was a perfect explanation.
Only a biker knows why a dog sticks his head out of a car window.
Multum in Parvo - Much in Little
"Yes, it is FAST! No, you CAN'T ride it!" - http://www.xbhp.com/talkies/general-...a-300-san.html
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Woww...! That was one well researched & presented article karthik. Too good mate. Keep up the good work.
Whenever there is a Rainbow in the sky, I know it's u mastering the art of Cornering. U will always be remembered brother, R.I.P Arun.
The 5 Speed Restoration
The Z Restoration
/2001 Yamaha Rx 135 5 Speed/ 1999 Yamaha RXZ 135/ 2012 Honda Dio/ ?
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Originally posted by RXZ5speed View PostWow man that was a perfect explanation.Originally posted by abhimanyu31 View Post+1... @karthikdattag: that is truly well researched and written... will use the same for future reference... thanks
Thanks a lot guys. There is still lot of other inputs to be added, will do that as and when time permits.Originally posted by dual disc 200 View PostWoww...! That was one well researched & presented article karthik. Too good mate. Keep up the good work.
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Yes it is. Be sure to swap/install the CDI, carb and wiring harness.Originally posted by insane_x97 View Postthat was really nice information bro....
thx for that..
here goes some ot, sorry for that...
i am planing an engine swap, shaolin engine in shogun,will that be a retro fit..1985 Yamaha RD350 HT
1989 Ki-Honda 110
1994 Suzuki Shogun
1997 Yamaha RX135
2008 Yamaha FZ
Suzuki Supra Powerup
IND-SUZUKI AX100
Hero IMPULSE
TVS NTORQ
No Cams, No Valves, No Headaches.
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