Bajaj Discover block piston kit: price, which Discover, 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 Discover do you have?

1002004 to 2012 Discover 100 DTSi, before the 4G and 5G models. 4G, 5GDiscover 100 Discover 100 with 4 or 5 gears, 95 cc. 100M, 100T2013 to 2015 Discover 100M and 100T, 102 cc 4-valve. 110Before BS6 Discover 110, including the 110 CBS BS4. 125 oldUp to 2014 The first Discover 125 models, including the 2011 to 2014 DTS-Si. 125 ST, M, T2012 to 2016 Discover 125 ST, 125 M and 125 T with the 4-valve engine. 125 20152015 to 2018 The 2015 Discover 125 new model. 125 BS42018 to 2020 Discover 125 UG BS4 with LED daytime lights. 125 BS62020 onward Discover 125 BS6 or CT 125. RC says BS-VI, or registered from April 2020. 1352007 to 2012 Discover 135 DTSi. 1502008 to 2015 Discover 150, 150F and 150S.

Discover models at a glance

ModelYearsKits hereFrom
Discover 100 DTSi2004 to 20123Rs. 2,380
Discover 100 4G and 5G4 and 5 gears1Rs. 2,780
Discover 100M and 100T2013 to 20153Rs. 2,780
Discover 110Before BS62Rs. 2,550
Discover 125, first modelsUp to 20142Rs. 2,950
Discover 125 ST, M and T2012 to 20162Rs. 2,990
Discover 125, 2015 model2015 to 20183Rs. 2,799
Discover 125 UG BS42018 to 20201Rs. 3,240
Discover 125 BS6 and CT 1252020 onward1Rs. 2,990
Discover 1352007 to 20122Rs. 2,690
Discover 150, 150F, 150S2008 to 20153Rs. 2,980

Discover over the years

2004 to 2012Discover 100 DTSi. GOETZE gives a 47 mm bore.
2007 to 2015Discover 135, then the Discover 150, 150F and 150S.
2012 to 2016Discover 100 4G and 5G, 100M and 100T, and the 4-valve 125 ST, M and T. Bajaj lists one block kit for the 125 ST, M and T and another for the 100M and 100T.
2015 to 2018The new Discover 125, with its own block kit in Bajaj's catalogue.
2018 to 2020Discover 110 and the 125 UG BS4 with LED daytime lights.
April 2020 onwardDiscover 125 BS6, with its own DEXO kit, also listed for the CT 125.

Signs your Discover 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.

What Discover buyers say

Great

Rikki S. Verified buyerGOETZE kit, Discover 100

Original part must buy

Parvesh K. Verified buyerBajaj Original kit, Discover 150F and 150S

Original Bajaj or aftermarket?

DEXO, GOETZE and USHA kits are made to fit these Discover models and are not Bajaj-branded. The kit marked Bajaj Original is sold as Bajaj's own part, and 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 Discover block piston kit?

Discover block kits here start at Rs. 2,380 and go up to Rs. 3,290. The price depends on the model and brand; the kits above show each one.

How do I know which Discover I have?

Look at the badge and the year on your RC: Discover 100, 100M or 100T, 110, 125, 125 ST, M or T, 135 or 150. The Discover 125 had several generations, so match the year on your RC to a section above.

Do the Discover 100 and Discover 125 share a kit?

No. Bajaj lists different block kits for them, even for the 100M and 125M that were sold side by side. Pick the section for your engine size.

Is the 125 ST kit the same as the 125 M and 125 T kit?

Yes. Bajaj's catalogue lists one block kit for the 125 ST, 125 M and 125 T, and a different one for the 100M and 100T.

Will an older Discover 125 kit fit a newer Discover 125?

No. Bajaj gives each Discover 125 generation its own block kit number: the first models up to 2014, the 125 ST, M and T, the 2015 model and the 2018 to 2020 UG BS4. Pick the section that matches your year.

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.

Are these original Bajaj kits?

The kit marked Bajaj Original is sold as Bajaj's own part, and the kits marked Original are sold as original-equipment blocks. DEXO, GOETZE and USHA kits are aftermarket and not Bajaj-branded.

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.
19,000+ parts for the Discover, 450+ 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 Discover

Discover 100 and 110 partsDiscover 125 partsDiscover 135 partsDiscover 150 parts