MEGARA is the new IFU and multi-object instrument for the GTC. MEGARA has a series of optical bundles on the focal plane of the GTC, which feed several fixed spectrographs. Each spectrograph can provide spectral resolutions of 5600, 10000 and 17000, with high transmission thanks to the combination of VPHs and a new technique developed for this project called sliced-pupil gratings. This contribution presents the spectrographs design and their expected performance.