The DTS-Si (Digital Twin Spark Swirl Induction) was a later fuel-efficiency variant. Parts like the cylinder head and camshaft are . Your catalogue should explicitly say "135 DTSi" (not DTS-Si or 125).
The is more than a list of screws and springs; it is the DNA blueprint for one of the most reliable 135cc commuters ever built. Whether you are a DIY home mechanic fixing a leaking fork seal or a professional restoring a classic 2012 model for resale, having this PDF on your smartphone or laptop will save you hours of confusion and prevent costly wrong purchases. bajaj discover 135 dtsi spare parts catalogue pdf