As Noted in the chart (TT) means Tube Type

Volume: 8-litre (490cu in) capacity

and a level of suppleness you never thought possible

2013 - 2018 Honda CRF 250L

VertexWinderosa - Complete Gasket Set with Oil Seals - 811 (811614) past type tag-Jackets & Vests As Noted in the chartThis set includes all gaskets and oil seals necessary to rebuild the engine and transmission. Dirt ATV (811) sets include all OEM specified gaskets, o rings, and engine oil seals for to rebuild the engine and transmission including output shaft, water pump, clutch, shift and starter seals Includes formed rubber valve cover gaskets Does not include mechanical water pump seal