Bajaj CT 100 block piston kit: price, CT 110 and BS6, which one fits

Checked by the eAuto parts team, updated Nov 2026

12,000+engine block kits sold
10 daysreturns from delivery
CODcash on delivery available

Which CT do you have?

Old1997 to 2007 Boxer CT, then the CT 100 and CT 100 new model. 110Before BS6 CT 110 with electric start, or the CT 110 BS4. 100 BS62020 onward CT 100 whose RC says BS-VI. 102 cc. 110 BS62020 onward CT 110 whose RC says BS-VI. 115 cc.

CT models at a glance

ModelYearsKits hereFrom
Boxer CT and CT 1001997 to 20074Rs. 2,350
CT 110Before BS62Rs. 2,550
CT 100 BS62020 onward1Rs. 2,950
CT 110 BS62020 onward1Rs. 2,950

CT over the years

1997 to 2006Boxer CT and Boxer CT Deluxe.
2004 to 2007CT 100 and CT 100 new model. GOETZE gives a 53 mm bore.
Before April 2020CT 100 BS4 with CBS. Kit not listed here yet.
April 2020 onwardCT 100 BS6, 102 cc, and CT 110 BS6, 115 cc, each with its own Bajaj block kit.

Signs your CT needs a block kit

SmokeWhite or blue smoke from the silencer
Oil lossEngine oil drops between changes
Weak pickupSlow on climbs and with a pillion
Hard startNeeds many kicks or presses

After fitting: ride gently for the first 500 km and change the oil after that.

Original Bajaj or aftermarket?

DEXO, GOETZE and USHA kits are made to fit these CT and Boxer models and are not Bajaj-branded. Kits marked Original are sold as original-equipment cylinder blocks. Each kit comes as a set: block, piston, rings, pin and circlips.

Common questions

What is the price of a CT 100 block piston kit?

Kits for the old CT 100 start at Rs. 2,350 and go up to Rs. 2,980. The CT 100 BS6 kit is Rs. 2,950. CT 110 kits are priced separately above.

How do I know which CT I have?

Check the model name and year on your RC: Boxer CT, CT 100 or CT 110. If your RC says BS-VI, use the CT 100 BS6 or CT 110 BS6 section.

Is the CT 100 kit the same as the CT 110 kit?

No. The CT 110 has a 115 cc engine and its own kit. Pick the section for your bike.

Will an old CT 100 kit fit the CT 100 BS6?

No. Bajaj lists a different block kit for the CT 100 BS6, so use the BS6 section above.

Is there an original Bajaj kit for the CT 100?

The kits marked Original are sold as original-equipment blocks; we list them for the CT 110 BS4, CT 100 BS6 and CT 110 BS6. DEXO, GOETZE and USHA kits are aftermarket and not Bajaj-branded.

Is a bore kit the same as a block piston kit?

Yes. Bore kit, block piston kit, cylinder kit and piston cylinder kit all mean the cylinder block with its piston, rings, pin and circlips.

Does the kit include the cylinder head?

No. The kit is the cylinder block with its piston set. The cylinder head is a separate part.

Can I return it if it does not fit?

Yes, within 10 days of delivery.

Is cash on delivery available?

Yes, for most pincodes.

Why buy engine parts from eAuto

5 lakh+ orders since 2020, shipped to 19,000+ pincodes.
8,500+ parts for the CT and Boxer, 150+ of the kits on this page and 5,500+ DEXO kits sold.
10-day returns from delivery, and cash on delivery if you prefer.

More for the CT

All CT 100 parts